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Home My WebLink About20050791.tiff pi: i ~ , �114„..,,t - AREAWIDE WATER QUALITY MANAGEMENT PLAN 2003 &'. PDATE ` `r• N` tit.kji �1 �,lµA ' •* r e.N. 4Q pie.,...,..y. i.1 y,;' )t it } { �� G� l 44-1 r +'r\ ,.� yf'� b3.b ,. >3'\ gt� .,. '�_ 4 l w I tyc h ' 3 7J�C ,.4,-.r.. +" . # r',J+ �+ ., a., ',,-3 ` y sort •f `a` ./r 90 ib 7..-Jr' r w 4"-611,44, 1'., .. : 4,1' -+.._ •,•, ..e..", `,44''- i !x,? i ' ff 5'' 1 err_' ,� ,,,'4_'8Y' • _ x a -t 'y( C r.,t, t .4 .rl ". a At : i •' {y am' r . < ,y4 �•� fit �� s^\ °`. r-if4 1 � . Tr r i \ ,j{ 55 fir { Mfr.. •n~ ,'yam .; i , L. ` � ,y �� . 14. NORTH FRONT RANGE WATER QUALITY PLANNING ASSOCIATI EXHIBIT 2005-0791 R-�1 th TABLE OF CONTENTS Chapter TS_ft EXECUTIVE SUMMARY I. Designation of Management and Operating Agencies I-1 II. MUNICIPAL POINT SOURCE DISCHARGES II-1 A.MUNICIPAL POINT SOURCE INVENTORY II.2 CACHE LA POUDRE RIVER BASIN 11.2 Ault 11-2 Boxelder Sanitation District II-4 Eaton II-8 Fort Collins II-8 Fox Acres II-10 Greeley II-11 Severance II-12 South Fort Collins Sanitation District II-13 Timnath II-14 Wellington • WII-14 Windsor II-15 BIG THOMPSON RIVER BASIN II-16 Berthoud II-16 Berthoud Estates 11-19 Estes Park Sanitation District II-19 Johnson's Corner II-21 Johnstown II-21 Loveland II-22 Milliken II-23 Riverglenn 11-24 Upper Thompson Sanitation District II-24 Western Mini RanchesNaquero Estates II-25 SAINT VRAIN CREEK BASIN II-26 Dacono Sanitation District II-26 Erie II-28 Longmont II-29 Mead II-30 Saint Vrain Sanitation District II-33 Weld County Tri-Area Sanitation District II-34 SOUTH PLATTE RIVER BASIN II-36 Evans II-36 Fort Lupton II-38 Galeton Water and Sanitation District II-38 Gilcrest - II-39 Grover II-39 Hill-N-Park Sanitation District II-39 Hudson II-40 Keenesburg II-41 Kersey II-41 La Salle II-42 Lochbuie II-42 Pierce II-43 Platteville II-44 Weld County School District RE-3J II-44 BIG DRY CREEK BASIN(Weld County) - 11-46 Broomfield 11-46 Northglenn 1149 Regional Facility 11-52 B.DATA SHEETS&SERVICE AREA MAPS 11-54 III.INDUSTRIAL PERMITTED POINT SOURCE DISCHARGES III-1 EXECUTIVE SUMMARY The 2003 Update of the Areawide Water Quality Management Plan (208 Plan)for Larimer and Weld Counties (Region 2) has been prepared by the North Front Range Water Quality Planning Association (NFRWQPA)as part of the continuing 208 Plan update process.The NFRWQPA has now been the responsible 208 Areawide Water Quality Management Agency for over sixteen years. This update addresses specific water quality topics which are a priority in the region and wastewater management issues which have changed since the last update was completed in 2001. Chapter I contains the results of a major effort to update the designations in the plan of responsible Management and Operating Agencies who are charged with implementing a large part of the plan. For this plan update, a thorough review of all designations made in previous plans was made. All entities were contacted regarding their desire to continue being listed as a designated management agency or wastewater management/operating agency and regarding evaluation of their current programs with respect to water quality control. The second major feature of the 2003 208 Plan in Chapter II is a complete update of information on all municipal point source discharges, including a description of facilities and their status,data sheets describing the major statistics on each, and a service area map for each. The service area maps have been prepared using GIS technology and are much improved over those used previously. This section incorporates all amendments made to the Plan since 2001 up through October of 2003. The data sheets were revised to include all changes made through site approval applications and updated population projections. Also continued this year is a description of the operations and treatment facilities of the major permitted point-source industrial dischargers in Chapter III. CHAPTER I DESIGNATION OF MANAGEMENT AND OPERATING AGENCIES xrg w g :. ". . y�+J 3 `. jam,. �6 i I. DESIGNATION OF MANAGEMENT AND OPERATING AGENCIES Originally, in the 208 Plan Update prepared in 1985, lists of designated management agencies and operating agencies in Larimer and Weld Counties were delineated. Those lists have since been updated by the inclusion of additional agencies when they have become eligible for designation. For this update, a thorough review of all designations was made, and all agencies were contacted regarding their desire to continue to be listed respectively as a designated land-use management agency or a wastewater management/ operating agency. As in previous plan updates, a land-use management agency is defined as a general purpose type of governmental agency with land use control powers such as a county, city and county, city or town. These land-use management agencies are responsible for oversight of all water quality concerns related to land use within their jurisdiction including point and non-point sources of pollutants and activities which can degrade receiving waters. A wastewater management / operating agency is responsible for controlling all aspects of the collection, treatment, and discharge of sewage or industrial wastewaters within their district boundaries or service area or, in the case of an industrial concern, within their company's sphere of operation.As in previous updates, a city or town which operates their own sewage collection system and treatment plant or plants is designated both as a land-use management agency and a wastewater management / operating agency. As was indicated above, a land-use management agency should have land use authority to be effective in solving water quality problems associated with development. The land-use management agency would be responsible for land use decisions which could affect the quality of waters in its area of jurisdiction or the ability of the wastewater management/ operating agency to provide adequate wastewater collections and treatment. The concerns for water quality related to septic tank use, proliferation of small treatment plants, urban runoff, construction caused erosion and sedimentation, and other activities can be approached through various forms of land use controls. 1 -1 A wastewater management/operation agency must be able to design, construct, operate, and maintain waste treatment works and to finance these operations through the raising of sufficient revenues. All agencies should have the capacity to enter into agreements with each other to provide the best cooperative approach to water quality management. The roles of the two types of agencies differ with the type and level of responsibility with which they are charged. Typical responsibilities of each are as follows: LAND-USE MANGEMENT AGENCIES • Define urban service areas and urban growth areas. • Review site approval applications. • Exercise land use powers based on water quality considerations. • Provide expertise to the planning process. • Seek agreements with appropriate wastewater management/ operating agencies. • Make recommendations to NFRWQPA on any service area boundary change or any facility expansion and certify compliance of such with the 208 Plan. • Encourage cooperation in accomplishing pollution abatement activities within their jurisdictions. • Include in their respective comprehensive plans the necessary water quality considerations. WASTEWATER MANAGEMENT I OPERATING AGENCIES • Define their sewerage service areas. r I -2 • Refer to the responsible land-use management agency any plans for modifying service area boundaries and expansion of sewerage collection and treatment facility. • Refer to NFRWQPA any changes in service area and plans for new service or plant expansion. • Seek agreements with the appropriate land-use management agency on urban growth areas and service areas. • Operate and maintain their sewerage facilities in compliance with all applicable permit conditions. • Maintain a viable financial and revenue program to provide for future required capital expenditures and operation maintenance costs. RECOMMENDATIONS It is recommended that the following entities be designated as land-use management agencies or wastewater management/ operating agencies. LAND-USE MANGEMENT AGENCIES Ault Berthoud City &County of Broomfield Dacono Eaton Erie Estes Park Evans Firestone Fort Collins Fort Lupton Frederick Garden City Gilcrest Greeley Grover Johnstown Keenesberg I -3 Kersey Larimer County LaSalle Lochbuie Longmont Loveland Mead Milliken New Raymer Nunn Pierce Platteville Severance Timnath Weld County Wellington Windsor WASTEWATER MANAGEMENT!OPERATING AGENCIES - Public Ault Berthoud Boxelder Sanitation District. Broomfield Dacono Sanitation District Eaton Erie Estes Park San. District Evans Fort Collins Fort Lupton Galeton San. District Gilcrest Greeley Grover Hill-n-Park San. District Hudson Johnstown Keenesberg Kersey LaSalle Lochbuie Longmont Loveland Mead Milliken Northglenn Nunn Pierce Platteville Severance South Ft. Collins San. District Spring Canyon Water & San. District St. Vrain Sanitation District 1-4 Upper Thompson San. District Weld Central High School Weld County Tri-Area Sanitation District Wellington Windsor PRIVATE - Industry Anheuser-Busch Colorado Sweet Gold Johnson's Corner Kodak Colorado Swift Premium Western Sugar RESIDENTIAL B & B Mobile Home Park Berthoud Estates Fox Acres River Glen Western Mini Ranches 1 -5 r CHAPTER II MUNICIPAL POINT SOURCES AND MANAGEMENT AGENCIES • i / a ^[� r • L K w �,,• `r.._ II. MUNICIPAL POINT SOURCES AND MANAGEMENT AGENCIES Introduction The status of each municipal point source discharge and management agency in the region is presented in this chapter, listed by river basin. A discussion of the facilities at each wastewater treatment plant is included, along with an updated point source inventory data sheet and a current service area map for each discharging entity. New or expanded facilities and treatment levels are listed as well as any anticipated near future needs. Projections of when the facilities will reach 80% and 95% of their design capacity are made. The service area maps outline the boundaries of the areas for which the operating entity will be responsible to provide wastewater service in the foreseeable future. Any change in these boundaries will require an amendment to the plan unless it is a minor adjustment involving less than ten acres. No overlaps in service area boundaries are allowed by the plan unless there is in existence an agreement between the involved service entities as to how service will be provided to the overlap areas. Loveland and the South Fort Collins Sanitation District have such an agreement as do Wellington and Boxelder Sanitation District. The information in this chapter updates that which is included in Chapter VI-"Point Source Status" in the 1985 Water Quality Management Plan and in Chapter I - "Municipal Point Sources" in the 2001 update of the plan. It therefore incorporates into the plan all amend- ments to the plan which have been made since the 2001 update through October 2003. The facilities are discussed in alphabetical order by river basin. II - 1 , c snit z e4 i I Ri: 4 h' tz.` c `' Cache la Poudre < a i '�•s $ River Basin e`e j p 9 F 1 hq k 1 set Paxelder ago ,ylo F f a, 0 rt y�Ale C� 'd'n YY .. 3 _uru 4 r L"' p•• pr•�c , \ 2 y t S #. Big Thompson �� a� 0 e %< River Basin ,,.� !I uury ornC� �� I iiLI a d� . " •ul„ p p N Goleton I q •.ttU p ^ li TT4t , g South Platte Thompson n n cow.,r,47, ":.,!,,,c, \ ,k/: Vitt __., 7 / t-vEvans --------2 ' #,..- River Basin fttl f • �ry lir Little Thompson...., 5v, " a j. V River Basin ;sae •�"Ip, I P� _ _ ( �arilner Coun • y ow' 7 ^� _ °Gilcrest Boulder County rry i :'� / - - - `o: ` ,e). �t�t taty1lh 1/ _ .. t & ' rt''+°• L , r=� �� ;onnos I' s North Front Range t,ok, u1" . K c Water Quality Planning Association • _ pe „,o` '�� _ LARIMER-WELD REGION st St. Vrain .. .. Vrain' YEAR 2001-2002 Creek Basin r 1 Fort t uptan is. ` . SANITATION DISTRICTS i` z LOCATION MAP i es 12-04-03 Map Area x— ` "",tt^"n Drainage Basin Boundaries Llif. • i insanitation Districts i Weld County i_, ----17- __C_"_ dam As County MILES Colorado i A. MUNICIPAL POINT SOURCE INVENTORY CACHE LA POUDRE RIVER BASIN The Cache la Poudre River drains the major portion of Northern Larimer County and the northwest portion of Weld County. Municipal discharges in the basin include Ault, Eaton, Fort Collins, Fox Acres, Greeley, Severance, Wellington, Windsor and the Box- elder and South Fort Collins Sanitation Districts. Figure II-1 depicts the Cache la Poudre Basin and locates the major discharges. A study completed in 1998 investigated alternatives to cooperatively provide service to the regional area between Fort Collins and Windsor. Participants in the study were Fort Collins, Windsor, Timnath, Boxelder Sanitation District, South Fort Collins Sanitation District, and Larimer County. The study recommendations were that the individual entities expand their own facilities as additional capacity is needed in the short term, but that the Boxelder and South Fort Collins Districts may experience savings if they cooperated in a joint sub regional plant in the long term. Ault Ault's treatment plant is located one-half mile south of town in the NW Y of the SW 1h of Section 13. In addition to the collection system, wastewater facilities include a bar screen, grit chamber, Inhofe tank, a single-cell waste stabilization pond, and a percolation pond. Plant flows average approximately 86,000 gpd, and the design capacity of 0.12 mgd should be adequate for another year. With growth that is expected in the town, Ault plans to make improvements to the treatment plant. The town has completed a preliminary engineering report and currently is in the process of securing financing to upgrade the treatment 11 -2 r oS a� F 2 I .o a FIGURE I-1. .. "� CACHE LA POUDRE RIVER BASIN R Hill Itu ! ; MUNICIPAL DISCHARGES Si4 � . . I II I 1,, I. I `11's 12-04-03 awl l , ��-0 Q ) E,d m SERVICE AREA 11r' I i TREATMENT PLANT G fl;ngt !� .41 I' � II I, I I I I Si � l � I . r I I I 1 0 5 '' e` r' ' Ho r I ! H MILES 4 �� FF I' I I I POUDR II N ir VI • 1 •` p Silk it 4. o lb o r .*. ‘ _ ' - = Boxelder Ault i E ►, 111. Fort C.Ilins 1 d • N. . Severance //' %% $ .,,V7/7 . - _ !/ Int ,n /' - / / i iii r* COL-392 "a southF it /-r-) [1 j j / Windsor ! 1 r,‘ iz✓�/i . ' " -**1 !: " . "7.!: t + // // • � i ffi� 7 / // /// , . 4 e . illi / CHE LAy \ '1 • I _ 0.a-• ® _ ® - , US-34 b ? � / � .a�® � i ` A . tip 1 - II-3 plant to a capacity of 0.25 mgd. The plant upgrade will include deepening the pond, dividing it into three ponds, lining the ponds, adding diffused aeration and incorporating a disinfection system. Discharge will continue to be via rapid infiltration to groundwater. These improvements should be in use before 2005. Boxelder Sanitation District Since 1965, this special district has served an area located east and north of Fort Collins, along the east side of LeMay Avenue and east of the Cache la Poudre River. The Boxelder Sanitation District treatment plant is located alongside the confluence of Boxelder Creek and the Cache la Poudre River and will be utilized to serve an area north to the Town of Wellington's existing service area generally along LCR 58 to the easternmost area and LCR 60 on the west toward the foothills. It will overlap Wellington's service area in Sections 7, 8, 14, 15, 16, 17, T8N, R68W and Section 12, T8N, R69W, as per an IGA with the Town of Wellington. The Boxelder Sanitation District service area will border, generally, the Cherry Hills Sanitation District and the City of Fort Collins on the west. On the east, the district service area extends into Weld County where there is not another service entity. On the south,the anticipated area to be served extends to LCR 36 & 40 and generally is expected to approach the South Fort Collins Sanitation District to the south and the Town of Windsor on the southeast. Through formal and informal arrangement, it is expected that there will be some consideration given to cooperative planning with possibly both the Town of Windsor and the South Fort Collins Sanitation District on the south and with the Town of Wellington on the north to determine the most economical and expeditious manner to serve properties of interest. The District will continue cooperation with other wastewater treatment entities. II-4 Boxelder's long range Management Plan was revised in 2001 to include a description of the treatment facility,anticipated upgrades and improvements, expansion of existing collection and treatment systems,and investigations of financing mechanisms to bring these expansions to fruition. The Plan also considers the possibility of reuse of treated wastewater for landscape irrigation. The District has the following projects planned: 1. Wastewater Pumping Stations: Wastewater pumping stations and accompanying pressure sewer systems may be constructed in the following locations: a. In Sections, 23, 24, and 25, Township 7N, Range 68W to serve properties in the Timnath Reservoir Basin. b. In Sections 9 and 10, Township 7N, Range 67W, to serve properties in the vicinity of Highway 14 and Highway 257. c. In the area east of 1-25 and west of Larimer County Road 5, south of the Poudre River near its 1-25 bridge, and north of Larimer County Road 36. Additionally, the existing district's 1-25 Rest Area Pump Station and the Walker Manufacturing Pump Station may be enhanced for larger hydraulic capacities. Other wastewater pumping stations may be needed at locations not readily served by gravity sewer. 2. Treatment Plant Expansion:There will be enhancements made to the existing wastewater treatment facility located in Section 28, Township 7 N, Range 68W. This potentially includes, among other things, a reworking of the influent works, II -5 additional aeration capability for the existing lagoons, a modification of the treatment process to treat wastewater for ammonia, nutrients and other pollutants--along with treatment of BOD, TSS and conventional pollutants--in anticipation of possibly more restrictive water quality regulations. Work on the enhancement of support systems at the plant and potential removal of wastewater sludge from the lagoons will be completed in the short term. 3. Collection System Enhancement: A study of the collection system and identification of potential sites of infiltration and inflow has been carried out. The District intends to continue its work on building a database for quantification, reduction, and possible elimination of much of the infiltration/inflow for various segments of the collection system. This may include replacement and/or repairs to various segments of the collection system and installation of alternative collection systems (e.g., vacuum systems) in hard-to-serve areas. Installation of major new collectors to be put served through the existing treatment plant, is anticipated as well. Potential installations include: a. Boxelder Interceptor extension (to serve East Basin) b. Poudre Interceptor extension ( to serve West Basin) c. Cooper Slough Interceptor extension (to serve West Basin) d. Prospect Collector (to serve East Basin and Timnath Reservoir Basin). e. Timnath Lake interceptor (to serve Timnath Reservoir Basin). II-6 Force main replacement and/or expansions are contemplated for some of the existing wastewater pumping stations. 4. District Infrastructure Protection: The District is likely to continue its work on the protection of its infrastructure (flood proofing plant site and collection systems components) that described in the 1999 update to the North Front Range Water Quality Planning Association Management Plan. 5. Wastewater Reuse: The District anticipates a potential need for reclaimed domestic wastewater from its wastewater treatment facility for use in landscape irrigation. In the course of time, as the need for such reclaimed wastewater is manifested, the District will initiate planning, design, construction and operation of appropriate works to satisfy the requests for such service. The District's existing treatment facilities consist of two aerated lagoons and two polishing ponds, followed by chlorination and dechlorination. Discharge is to Boxelder Creek just above its confluence with the Cache la Poudre River. The rated capacity of the plant is 2.34 mgd and 3,200 lb. BOD5/day. The 2002 annual average wastewater flows were 1.52 mgd and the average organic loading was 1,800 lb BOD5/day. Based on a conservative growth rate estimate,the District has adequate capacity for projected growth 7 to 10 years. In July 2003, the District entered into a contract with Rothberg, Tamburini and Windsor, Inc. (RTW)to evaluate the district capabilities(treatment plant, collection system, pretreatment, and support systems), propose enhancements to these elements, and help identify a strategy to address the Districts' future needs. II -7 Eaton Sewerage facilities for the Town of Eaton consist of secondary treatment in an oxidation ditch, clarification, chlorination, and aerobic sludge digestion. The design capacity of the plant is 0.34 mgd, present flow is about 0.25 mgd, and capacity flows are expected by 2005. The Town installed locally funded improvements to the sludge handling facilities, including additional sludge drying beds, and they improved aeration capability in the oxidation ditch.The discharge is to Eaton Draw, which is tributary to the Cache la Poudre River. The Town does provide service to the East Eaton Water and Sanitation District. The District contains 52 residences. Two new large subdivisions have been approved in the southern portion of Eaton, Govenors Ranch and Maplewood, and each will require a lift station for service. Site applications for those lift stations have been submitted. Eventually, the treatment plant will need to be expanded or replaced; and if it is relocated downstream, the Maplewood lift station would not be required. An engineering study is in progress to determine future needs. Plans are being made to construct a new facility or expand the existing plant capacity to about 0.75 mgd. Fort Collins The City of Fort Collins is the designated Management Agency for the area within its Urban Growth Area (UGA) Boundaries. An intergovernmental agreement between Larimer County and Fort Collins specifies the responsibilities of each in relation to approval of developments that are in the UGA and not within the city limits. Fort Collins and Larimer County accepted the responsibility of designated management agencies in 1978. The intergovernmental agreement (lGA) establishing the UGA was adopted on II -8 May 1, 1980, and last revised on September 7, 1999. Interagency agree- ments have been adopted between the City and special districts in its area of jurisdiction. Fort Collins has two municipal wastewater treatment plants. The Mulberry Water Reclamation Facility (MWRF) treatment processes include primary sedimentation, trickling filtration, intermediate clarification, and activated sludge secondary treatment in series, followed by secondary clarification, and U.V. disinfection. The plant has a permitted capacity of 6 mgd for discharge to the Cache Ia Poudre River, and influent flows can be diverted to the Drake Water Reclamation Facility(DWRF)via an interceptor. Presently MWRF is being base loaded at a flow of approximately 3 mgd, and excess flows are diverted to DWRF. DWRF has a total permitted capacity of 23 mgd. DWRF can discharge effluent to the Cache Ia Poudre River, Fossil Creek irrigation ditch, or to an on-site pump station owned by the Platte River Power Authority for use as cooling water at the power plant 20 miles north of Fort Collins. DWRF treatment processes include primary sedimentation, biotowers, activated sludge, secondary clarification, chlorination, dechlorination, and biosolids thickening,dewatering, solar drying and land application. The sanitary waste transfer station originally located at MWRF was re-located to DWRF in 1995 as part of the upgrades at MWRF. Average combined summer flows to the two plants are currently approximately 17 mgd. There are no problems with meeting secondary treatment levels. The City of Fort Collins currently produces 1900 dry tons of biosolids per year. The biosolids are applied to the rangeland of the City-owned 26,000 acre Meadow Springs Ranch located north of Fort Collins. The City's II -9 Resource Recovery farm site,which had been used for biosolids application, has been sold to the City Natural Areas program with the exception of a 25 acre parcel at Prospect St. and 1-25, which is being sold for development. The City completed its' 20 year "master plan for wastewater treatment" in 1990 with updates in 1994 and 1999. The latest review, completed in 1999, concluded that the City would no longer plan on involvement in a regional facility and will expand the DWRF site to meet the City's future needs. As a result of this decision,the future regional site (Jacoby Farm)is in the process of being sold to the Larimer County Open Space Program. Fox Acres Fox Acres is a recreationally-oriented development, primarily for second homes, located in Sections 22, 27, and 28, T1 ON, R73E, just north of the Red Feather Lakes area. It contains lots for home building, condominiums, and a golf course and clubhouse-restaurant. A PVC pressure sewer serves the subdivision, and wastewater collected is treated through the Community Services Corporation's facilities. Those facilities include an aerated lagoon, polishing pond, and chlorination. The aeration lagoon is partitioned into four cells, with six aerators in the first cell two in the second cell. These are submerged turbine-type aerators. The fourth cell is used for settling. Dis- charge is to an ephemeral tributary to Columbine Creek and then to North Lone Pine Creek in the SE '/ of Section 22. These waters are part of Segment 8 of the Cache la Poudre River. There are potentially 259 domestic connections to the sewer system at build out plus the clubhouse. Build-out is not expected for more than 20 years. The company is currently in the process of applying for a re-rating of the plant capacity from 0.035mgd to 0.07 mgd. 11 - 10 r Greeley The City of Greeley expanded its Water Pollution Control Facility(WPCF)to a capacity of 14.7 mgd in 1996. The average effluent flow in 2002 was 8.34 mgd. Plant processes include primary settling, activated sludge, secondary clarification, chlorination,dechlorination, anaerobic sludge digestion and land application of biosolids. The plant now has the capability of nitrification and denitrification, as well. The City is currently studying UV disinfection and solids handling and treatment options. Improvements may be implemented in the next two to three years. Greeley's discharge permit was renewed and became effective on August 1, 2000. The present ammonia limits vary by month and by effluent flow. The 30-day average permit limit for ammonia-nitrogen ranges as low as 5.0 mg/L. The WPCF has been able to meet the new limit. In 2001, Greeley completed a new Sanitary Sewer Master Plan.The purpose of this study was to provide an update to the city of Greeley's 1995 Sanitary Sewer Master Plan. This new Sanitary Sewer Master Plan includes modeling of the existing sanitary sewer system with a new hydraulic model. The model will then be used to identify deficiencies in the existing system and to provide planning for future growth of the system. The future system evaluation will also include evaluating the feasibility of regional wastewater treatment facilities and conceptual designs for the sanitary sewers for the City's long range growth area. The long range planning horizon for this study is the 2050. The review of water rights return flow requirements under current water agreements/laws will also be accomplished. A Capital Improvements Program (CIP) list of projects will be developed based upon the work of this study. The City continues to invest approximately $750,000 annually in sewer system replacement and rehabilitation. II - 11 The key goals to be accomplished in this study were: 1) identify limitations of the existing sanitary sewer system through new hydraulic model, 2) identify collection system and treatment improvements needed to serve the long range growth area, and 3) complete a five and ten year CIP project list including description and cost. Greeley is the designated management agency for the City and some adjacent areas. The City did accept the responsibility of designation, but there has been no formal agreement adopted between Greeley and Weld County pertaining to the respective responsibilities of each in the unincorporated areas that are within management agency boundaries of the City. The City does provide services to a very few accounts outside city limits. As the City grows, service agreements may be negotiate with adjacent municipalities and districts. Severance In 1979 Severance constructed a sewage collection and treatment system. The treatment facility consists of an aerated stabilization pond and a polishing pond with chlorination prior to discharge. In 1999 the Town modified the plant to a three cell system with aeration in the first two cells followed by a settling cell, relined the existing ponds, and built a new chlorine contact basin and installed flow meters. It has a rated capacity of 0.094 mgd. Flow is currently about 0.044 mgd and is expected to reach 0.101 within the next two years. The discharge is to Law Ditch, which is unclassified. The Town's permit expires in 2004. Severance is contemplating the construction of a sanitary sewer interceptor to connect into the Town of Windsor's new East Side Interceptor sewer. The length of this sewer will be approximately 15,000 feet. The wastewater generated from Severance would then be treated by the Town of Windsor. In the interim, II - 12 the Town is currently applying for site approval to expand the plant to 0.155 mgd hydraulic capacity and 388 lbs/day organic capacity. These improvements will include covering the first two lagoons and providing additional aerators and mixers. South Fort Collins Sanitation District The South Fort Collins Sanitation District provides wastewater services to an area of about 30 square miles between the cities of Fort Collins and Loveland. In addition to providing services to the unincorporated areas of Larimer County; portions of each city's urban growth area is served. The District also contracts service with the Spring Canyon Water and Sanitation District for treatment of their wastewater. Design capacity of the existing facility is 3.0 mgd. Average daily flows in 2001 were 1.92 mgd. Activated sludge aeration and clarification provide secondary treatment, tertiary treatment is through multi-media filters, and disinfection is by ultraviolet light before discharge to Fossil Creek Reservoir. Waste activated sludge is treated by aerobic digestion. Biosolids are disposed of by commercial hauler to a beneficial use site operated by the District. A Wastewater Master Plan was completed by the District in 2000. Recommendations in that study include expanding the system by the year 2006 to accommodate anticipated growth and maintain effluent water quality. The planned expansion will involve extended aeration activated sludge with final clarifiers, aerobic digestion, sludge dewatering and UV disinfection. This project will expand the facility's capacity from the current 3.0 mgd to 6.0 mgd as the first part of a 3-phase expansion which will culminate with a total capacity of 9.0 mgd. The last phase will replace the current 3.0 mgd system. The process planned will be capable of providing ammonia removal and phosphorus removal if required at that point in time. 11 - 13 Timnath The Town of Timnath has requested that they be designated as a Management Agency for their corporate limits and their urban growth management area (GMA). Because there is no intergovernmental agreement with Larimer County concerning a GMA in place yet, the Management Agency designation will pertain to the Town boundaries at this time. When an IGA with Larimer County is approved, the designation can be considered for the GMA. Timnath is currently studying alternatives to providing sewer service to its existing structures as well as plans for potential future development. If the Town has completed a plan for sewer service within its boundaries and identified a funding mechanism for implementing that plan by the time of the 2005 208 Plan update, those plans can be incorporated into the 208 Plan at that time. Until that time, the area within the Town that has not already been incorporated into a sanitation district should not be shown as being in a service area. Wellington Town of Wellington facilities through September 2003 consisted of two lagoons followed by chlorine disinfection. The system was rated at 290,000 gpd for a 590 lb/day BOD5 load. In 2000 a Wastewater Master Plan was completed which recommended building a new mechanical facility to provide capacity for growth demand as well as to meet new effluent requirements which include ammonia removal. The new facility,which became operational in October 2003, is an extended aeration oxidation ditch system with an activated sludge process including a 11- 14 headworks pumping station, final clarifiers, sludge dewatering, aerobic digester and effluent disinfection using UV light. Solids treatment will be accomplished through the AADC process (Agitate Air Drying and Curing) which is expected to produce a Class A Biosolid for disposal on Town property, surrounding sod farms, and possibly the CSU ARDEC site. The new system is sized for an ultimate design flow of 1.2 mgd, with the first phase of construction completing a 0.45 mgd system that can be readily expanded to 1.2 mgd. Recent information regarding Ill indicates that the Town, through it's on going efforts, has reduced average I/I by about 30%, bringing per capita flows down to 93 gpd in 2000. As per terms of an IGA with Boxelder Sanitation District, the Town's service area will overlap that of the District in Sections 7, 8, 14, 15, 16, and 17, T8N, R68W, and in section 12, T8N, R69W. Windsor The Town of Windsor presently treats municipal sewage from the Town, domestic sewage from the Kodak plant, and 0.1 mgd of pretreated industrial wastewater from the Metal Container Corporation in an activated sludge plant. Kodak's discharge amounts to about 30 percent of the flow. The process sequence at the Windsor plant consists of preliminary treatment followed by two parallel activated sludge process units, nitrification, possible denitrification, U.V. disinfection, discharge to the Cache La Poudre River, and biosolids handling.The treatment plant has a rated capacity of 2.8 mgd flow and 7,006#/day GODS organic load. Current loads are 1.04 mgd flow and 2,200 lbs/day BOD. II - 15 BIG THOMPSON RIVER BASIN The headwaters of the Big Thompson River are in Rocky Mountain National Park between the Town of Estes Park and the Continental Divide. After leaving the Big Thompson Canyon, the river flows by Loveland, Johnstown, and Milliken before joining into the South Platte River near La Salle. The Little Thompson River,a major tributary, converges with the Big Thompson at Milliken. Municipal discharges in the basin include the Estes Park and Upper Thompson Sanitation Districts and Loveland and Milliken to the Big Thompson River and Berthoud and Johnstown to the Little Thompson River. Figure 11 -2 depicts the Big Thompson and Little Thompson River Basins and locates the major dischargers. Berthoud Berthoud's current sewer service area includes the Town as well as some adjoining areas, including an area east of town to 1-25 and the area north of the Town that was formerly the South Loveland Sanitation District. That district was disbanded, and Berthoud assumed the responsibility of the service in 1986. The present population in the Town's Service Area is approximately 6,600 persons. The area near 1-25 does not have any service as yet, but a conditional plant is proposed in Section 27,T4N, R68W to serve the Serenity Ridge subdivision. That conditional plant will be abandoned when a proposed regional plant on the east side of 1-25 (commonly referred to as the Cross Point plant) can be built. The Serenity Ridge plant is recommended for approval on the conditions that it be abandoned when the regional "Cross Point" plant is built and the subdivision be required to connect to that regional plant. II - 16 ' F FIGURE I-2. • a BIG & LITTLE THOMPSON s 11 RIVER BASIN ) ti . E. MUNICIPAL DISCHARGES ilt12-04-03 -If �Cq ' SERVICE AREA A�GZ TREATMENT PLANT A:, `c e l4 'PTA 4 1 0 5 e- MILES v C 1V a '` o 41,„\iiik e ,. tamr iCOL() 3Y2 / ,s F ' ars 1— ~oMPSoN RIVER ! VLoveland " � '' It L Estes Park i r !� III 1 . � __ ; I . / US-34 1 _ / �'. Milliken 1 III al—.I— _ ( Upper 1 ,I .. � � � �irr' �.. 1 Thompson J.hns��' I (,�� P 1111 , lei �� F I �� ` I I zT T�F rH \ \ O44pc � \ ti N Berthoud v, aV ,p �. \� .Pertlea, ., .. . , a A ,.� �" Sl3 II-17 Berthoud's existing main treatment plant is an oxidation ditch type secondary plant with aeration, secondary clarification, chlorination, and aerobic sludge digestion with discharge of effluent to an unnamed tributary of Segment 9 of the Little Thompson River. Digested sludge is applied to land by a contract hauler. In 2000, a new sludge handling facility was constructed on the site proposed for a new WWTP. Current average daily flows are about 0.83 mgd, and the plant capacity is 0.9 mgd. Infiltration from high ground water during the irrigation season has been a problem in the past. Slip-lining the worst sections has been successful in reducing excessive infiltration. Addi- tional line replacement and manhole reconstruction occurs on an ongoing basis. Organic treatment capacity is 1300#/day BOD5 and current loading is about 1,300 lbs. per day. Wastewater master planning was updated for Berthoud in 1996. In 1997,the Town requested a plan amendment to add new areas to their service area and to have a site designated as a new regional plant site. Approval was granted for a plan amendment to include 640 acres in the S'%Section 18 and the N'/2 Section 19, T4N, R68W in the service area, and for the new plant site in S'% Section 19. The current needs of Berthoud have exceeded the capacity of the existing WWTP, and therefore a new facility is under construction to accommodate current needs and future growth. The new plant is expected to be complete in the spring of 2004. A new biosolids digester was completed at the new plant site in 2000, and wastewater treatment will be relocated to the new plant site when it is completed. The new plant will be able to treat 2 mgd; and the plant is designed to be expanded to 3 mgd by 2010. The new WWTP will incorporate screening and grit removal, a lift station, activated sludge aeration basins, clarifiers, and UV disinfection with the aerated digester. Berthoud again requested an expansion of their service area in 1998 to .-� include lands in the I-25/Highway 56 interchange vicinity. Those lands added II - 18 include all or part of Sections 15, 22, 23, 25, 26, and 27 of T4N, R68W. Development in these areas would be served by the regional "Cross Point" plant. Berthoud Estates The treatment plant at Berthoud Estates originally consisted of two aerated lagoons, a polishing pond, and chlorination. In 1993, it was modified to make the center lagoon an intermittent sand filter. In the summer, wastewater is treated through the first aerated lagoon and then discharged through the sand filter in the second lagoon; while in the winter, wastewater is treated through the first and third aerated lagoons before discharge. Discharge is to the Little Thompson River via Dry Creek and an unnamed intermittent tributary of Dry Creek. The plant now serves 184 homes with a rated capacity of 0.052 mgd. There is the potential for another 7 homes to be connected. The discharge began in June, 1982 and has had some problems in meeting effluent limits for TSS. The plant has been granted a waver of the 30/45 mg/I TSS limits to 75/110 mg/I because it is a small lagoon system discharging to an intermittent stream. The current CPDES permit for this dis- charge expires on July 31, 2004. Estes Park Sanitation District The Estes Park Sanitation District was formed in 1940 and serves approximately 3,350 full time residents. During the summer peak of tourism, the overnight population increases by approximately 3,400 residents. The District has 1104 single-family dwellings / full size condominiums, 510 smaller multi-family units and 300 commercial taps. Peak flows associated with tourism occur in late July or early August. During the 2002 peak 30 day 11 -19 hydraulic loading of .755 mgd occurred in July. Peak daily flow in 2002 was .824 mgd or 55 percent of capacity. The lack of rain in the Estes Valley kept this number lower than usual. The District anticipates peak flow to be approximately 65 percent of capacity. With the lack of available land within the District service territory to construct new homes, the biggest growth potential for the District will be in fill housing and redevelopment of existing parcels. An ongoing Ill program analyzes troublesome or aging collection lines and approximately 2,000 to 2,500 feet of these lines are replaced annually. The I/I program has steadily lowered peak flows associated with infiltration during the past ten years. New service extensions are performed on an as needed basis. The treatment facility was built in 1964 and includes plant processes of flow equalization, activated sludge secondary treatment, clarification, chlorination/ de-chlorination and aerobic sludge digestion. Biosolids are de-watered and removed by contractors for land application in Larimer and Weld Counties. Discharge is to Segment 2 of the Big Thompson River, just above Lake Estes. During 2001-2002 the District made improvements to the treatment facility that targeted efficiency and flexibility. The purpose was to meet more stringent effluent ammonia and pH limits. Also during that time the District has completed construction of a biosolids de-watering facility that also housed continuous chemical feeders to lower effluent metals and address odor concerns. Chief among the Districts concerns is the potential for more stringent metals restrictions in future discharge permits. While the District has been successful lowering effluent copper and lead, zinc reductions have been difficult to attain. The source of zinc may have to be evaluated more closely. The District utilizes aerobic sludge digestion. Biosolids are de-watered to 18%-20% prior to land application through contract application companies. 11 -20 Current application sites are located in Larimer and Weld Counties. The District annually produces approximately 100 dry tons of biosolids. Johnson's Corner The development at Johnson's Corner, which includes a truck stop, motel, trailer park and several small businesses, is provided sewage service through a small private treatment plant. The plant discharges minimally to an unnamed gully tributary to Hillsboro Ditch. It consists of two aerated lagoons, a polishing pond, and chlorination,with a rated capacity of 0.04 mgd hydrau- lic and 99 #/day BOD5 organic loading. The most recent improvements included the installation of larger aerators in the aeration lagoons, an elec- tronic flow meter, and a new effluent polishing area in cell #2. This facility could be abandoned and the discharge connected to the Johnstown Low- Point treatment plant within the next few years if that plant is built as proposed. Johnstown In 1982 the Town of Johnstown completed a wastewater treatment plant construction project which provided the Town core with more than sufficient capacity for the planning period. Average daily flows are now 0.38 mgd, and the plant design capacity is 0.42 mgd. The plant consists of a 3-cell aerated pond; the third cell is an unaerated polishing pond followed by chlorination before discharge to Segment 9 of the Little Thompson River. Projections for town growth estimate that flows could double within the next five to ten years. Johnstown plans to expand the plant in 2003 to a design capacity of 0.75 mgd, consisting of the existing three-cell aerated pond II-21 followed by dissolved air flotation, fixed film nitrification, and chlorination / dechlorination. Biological nitrification between Cells 2 and 3 is also included. Johnstown's comprehensive plan includes the need for two additional treatment plants; the Low Point and Cross Point Plants are planned for service areas northwest and southwest of the Town core, respectively. The Low Point Plant would discharge to the Big Thompson River and the Cross Point Plant would discharge effluent to the Little Thomson River. The Low Point Site Application was approved on May 4, 2001. The Cross Point Plant construction future is uncertain at this time, and it may be developed in conjunction with Berthoud. Each of the two additional plants are sited to optimize effluent reuse as high in the watershed as possible and to do so in conjunction with Town raw/finished water resource features. Loveland The City of Loveland is the designated management agency for the area within its urban growth area (UGA) boundaries. An intergovernmental agreement (IGA) exists between Loveland and Larimer County. This IGA sets forth responsibilities of both City and County concerning development in the urban growth area. Loveland accepted the designation as management agency in 1978 when this plan was originally adopted. Loveland's wastewater treatment facility has a rated hydraulic capacity of 8.0 mgd. Its treatment process consists of(1)a headworks facility including a bar screen to remove coarse solids, an odor control unit, and an aerated grit chamber, (2) primary clarifiers, (3)trickling filters, (4)aeration basins, (5)final clarifiers, (6) chlorination/dechlorination, and(7)anaerobic digesters. Sludge is stabilized by anaerobic digestion and utilized for land application through a contract with Liquid Waste Management. II -22 Current annual average flow is 5.10 mgd(2002),with an average flow of 5.70 mgd during the peak month (2002). The current service population is approximately 56,600 and is expected to increase approximately 2% per year over the next few years. Approximately 2% of the flow volume comes from industrial dischargers. The City completed a major wastewater treatment plant modification during 1986-87. The plant operation has been improving steadily.A bio-monitoring program has been underway since 1986. The City implemented a complete industrial pretreatment program during 1988. In 1998 CH2M Hill completed an Incremental Expansion Study of the wastewater treatment plant. This study identified 12 capital projects needed for the plant to achieve a rated capacity of 12.0 mgd. The first project is underway and will be completed in 2004, which will increase the rated plant hydraulic capacity to 10 mgd and rated organic capacity to 15,600 lbs/day BOD5. Loveland was issued its current NPDES permit in July 2002 with an expiration date of July 31, 2007. Milliken The Town of Milliken currently operates a .35 mgd aerated lagoon wastewater treatment plant. The wastewater treatment plant was put online on September 1990. The system includes 2 aerated lagoons, a finishing pond, chlorination, and de-chlorination facilities. With rapid growth Milliken has experienced, the current wastewater treatment plant is being replaced. The Town has selected a design/build team for a new 0.7 mgd extended aeration,activated sludge plant. Construction is anticipated to start in the fall of 2003, with a project completion no later than January 1, 2005. The plant II-23 is being designed to meet the effluent limits set by the Colorado Dept. of Health and Environment (CDPHE) in a letter dated June 12, 2001. The plant is currently, and will continue to be discharged to Segment 5 of the Big Thompson River in SW'/ of SE '/ of Section 1, T4N, R67W.The current capacity limits in the plant's permit are 570 pounds of BOD5 per day and a flow of 0.35 mgd. Beginning January 1, 2005, flow rate will be 1600 pounds of BOD5 per day and a flow of 0.70 mgd. Riverglenn The Riverglenn Subdivision south of Berthoud has a domestic sewage treatment system comprised of two aerated lagoons, an aerated polishing pond, and chlorination. The discharge from this 0.029 mgd rated capacity plant is to the Little Thompson River, and its current permit expired on January 31, 2003. The subdivision is built out 61 taps, and flows are approximately equal to 34-40% of the plant capacity. A new subdivision to the north of Riverglenn, consisting of 45 lots, may connect to the system when built and bring the flow to 72% capacity. Upper Thompson Sanitation District The Upper Thompson Sanitation District serves approximately 3,100 residences and 134 commercial establishments in an area of about 9 square miles around the Town of Estes Park.The District's flows average 0.6 mgd in the winter and 1.2 mgd in the summer. Discharge is to Segment 2 of the Big Thompson River. Two commercial connections account for 24% of the summer daily flows: Rocky Mountain National Park has 9% and the YMCA Camp has 15%. The treatment plant had an original design capacity of 1.5 II -24 mgd, and its facilities include activated sludge, secondary clarification, nitrification towers, tri-media filtration, and chlorination and dechlorination. Sludge is treated by aerobic digestion and disposed of on land by a contract hauler. The District has explored the option of transferring some of its raw sewage flow to the Estes Park Sanitation District and in exchange treating EPSD's biosolids for them. No further planning on such a possible exchange is now occurring, but it is still an available project at the appropriate time. The Upper Thompson Sanitation District plans to increase the capacity of their plant to 3.0 mgd in phases. Phase 2A has now been completed with the installation of a new centrifuge to replace a belt press, which now brings the District's capacity to 2.0 mgd. Additional aeration basins will be constructed in subsequent phases as growth dictates. r Western Mini Ranches/ Vaquero Estates These two subdivisions numbering 84 homes southwest of Berthoud have a treatment plant consisting of two aerated lagoons, a polishing pond, and a chlorine contact basin. The plant capacity is 0.025 mgd; and it discharges to Dry Creek, a tributary to the Little Thompson River. Current flows are about 0.018 mgd, and the subdivisions are built out. II-25 SAINT VRAIN CREEK BASIN The portion of the St.Vrain Creek Basin which lies within Weld County is in the NFRWQPA planning area. Because this is a relatively small portion of the basin at the lower end, there is little development in the area and few wastewater treatment entities. The entities in this basin have service area boundaries that are in close proximity to each other. Consolidation or regionalization of services should be considered when expanded services or treatment is planned. Figure II-3 indicates the discharges in this basin. Dacono Sanitation District The Dacono Sanitation District (DSD) provides only wastewater collection service to the City of Dacono. The District contracts with the Weld County Tri-Area Sanitation District (WCTASD) for treatment and disposal of the wastewater from a gravity basin that includes the original town site. An area of the City of Dacono located to the West is served by St. Vrain Sanitation District(SVSD). The City of Dacono has recently extended its Development Area three miles to the East to Weld County Road 21, and this area has been added to the District's service area. Negotiations are currently underway to extend an interceptor along Little Dry Creek to the City of Fort Lupton and to have Fort Lupton provide wastewater treatment through an Inter-Governmental Agreement. Interceptor construction is planned for 2004. Dacono Sanitation's existing population is approximately 3,864 and sewage flows are about 0.42 mgd. An IGA between DSD and SVSD provides for service to properties that straddle both districts service areas. II -26 1 car t 0 -)9) t t !: I t--- i a • i r_I0 • / 1t V � € Boulder _-O -1 S a m "• 2-3 f % t It r • r/ Mead P p I //r�� T�. COLO-66 �J\ .000LO-66 A �II 1 y # Ir: 1 6� r iV _C/Qtk Longmont : ®eg ` �0 %. 5t Vrain .,_„ „_., ,. ._,. „ • �' a• a "`) c • r ��F s. r_ // 44 v I _ ��{�{//�5� ' t a Weld CO 0 D � 451 � 0'�� COLO-52 ft- [ Ak'F a� s t �0 �� COLD-52 Ere FIGURE I-3. • ®` ST. VRAIN CREEK BASIN Dacono MUNICIPAL DISCHARGES �Or • , ,®. 12-04-03 ito it, *I , mt, . ,.... ,, , a Q SERVICE AREA WO s : . r .� 1 e TREATMENT PLANT 4 N (`J H Weld County 1 0 5 Adams County MILES II-27 I Erie The Town of Erie provides wastewater collection and treatment services within the Town's wastewater utility service area. The Town provided wastewater service to an estimated 7,218 people at the end of 2002. The maximum month "average daily flow" during 2002 was approximately 0.6 mgd. This flow is expected to increase to approximately 1.04 mgd by the end of 2005. The Town of Erie wastewater utility plan and site applications for initial rerating and subsequent expansion of the treatment plant to 1.2 million gallons per day was accepted as a final wastewater utility plan by the DRCOG and the NFRWQPA as co-water quality planning agencies, after review by the 0RCOG Water Resources Management Advisory committee and the NFRWQPA Board of Directors, respectfully. The wastewater utility plan includes wastewater utility plan (June 2001), and updated supplement (August 22, 2001). Wastewater treatment is accomplished using the activated sludge process followed by ultraviolet disinfection. The hydraulic capacity of the existing Erie Water Reclamation Facility (WRF) is 0.8 mgd. The corresponding organic capacity of the facility is 1,764 lbs BOD5/day. Engineering design for expansion of the Erie WRF hydraulic capacity from 0.8 mgd to 1.2 mgd capacity,with a corresponding organic capacity increase from 1,764 lbs BOD5/day to 2,642 lbs BOD5/day, is complete. Construction of the facility expansion is scheduled to be completed in the spring of 2004. It is anticipated that additional wastewater treatment capacity above the 1.2 mgd provided by the expansion of the existing WRF currently under design will be needed by 2007. A second Water Reclamation Facility to meet this additional capacity need is planned at a site near the north boundary of the II -28 Erie wastewater utility service area. The new"northern facility"will be design to treat an additional 1.5 mgd of wastewater and all of the solids (waste activated sludge) generated at both the northern facility and the existing facility. Preliminary planning for the new northern facility has already begun. Construction is expected to begin in 2005 with completion in 2007. Following completion of the northern facility, the existing water reclamation facility will be modified to produce re-use water for irrigation of parks and other open space areas in and around Erie. Longmont In 1989, the City of Longmont annexed a 140-acre parcel in Weld County, and in 1990 the City built an interceptor to connect that parcel to their wastewater treatment plant about two miles to the west. This interceptor is part of a basin service area, Basin G, that includes the area east of the City to a ridge slightly east of the Boulder-Weld County line. The first phase of construction in 1990 served the annexed parcel in the SW '/ of Section 6, T2N, R68W (McLane Site) and any development which occurs in the future between it and the present city plant. The City extended Interceptor G to the north and west in 1997-98 to serve development in the northeast part of the City. Longmont proposes to also serve other properties north of the McLane site between the county line and Union Reservoir through that interceptor. The City has just completed a project expanding the plant capacity to 17 mgd. It is a conventional activated sludge plant with UV disinfection and nitrification. The DRCOG Metro Vision 2020 Clean Water Plant provides additional wastewater management planning information for this overlapping service area. II-29 The two areawide plans will be kept consistent for planning purposes, and any planning information differences will be addressed through the memorandum of understanding between the areawides on a case by case basis. Mead The Town of Mead assumed ownership and control of the wastewater treatment facilities serving the Town upon the dissolution of the Mead Sanitation District on January 1, 1993. Treatment is provided by a three cell lagoon system with two aeration cells and one settling pond. In 1992 and 1993,the District partially upgraded their system by placing an earthen berm across the second of their two cell system, placed aeration into the second cell, changed the method of chlorination, and installed flow recording devices on both the influent and effluent sides of the plant. Following a study of the system by the Town's consulting engineer it was determined that sludge needed to be removed from the first cell (original aeration cell) and that detention time allowed algae to grow and be discharged in the effluent, thereby exceeding the TSS for the plant. In 1995, the Town began bypassing Cell 1 of the plant and drying it for sludge removal. Curtains were placed across Cell 2 to create three cells, and the polishing cell was also bypassed. This effectively cut the detention time and allowed the plant to operate more efficiently. In July 1996 Cell 1 was cleaned out and 1.1 million gallons of biosolids were removed. A new influent headworks structure was constructed in 1998. Four new 4,500 gallon chlorine contact vaults were added in 2000. These tanks are sized for a 30-minute detention at the peak flow rate of 180,000 gallons per day. II -30 A new permit, No. COG-582036, was issued on August 17, 1999, effective September 1, 1999. The permit, good for a hydraulic loading of 140,000 gpd, is valid through July 31, 2004. In 2001 the Town acquired the Lake Thomas Wastewater Treatment Plant. The facility's permit No. COG-582017, is rated for a hydraulic loading of 12,000 gpd and is valid through July 31, 2004. The aerated lagoon facility constructed in 1989, served the Country View Day Care Center. This facility has been converted to a senior housing complex in 2001 and is now called Lake Ridge Senior Condominiums. Currently the facility is not discharging flows to Lake Thomas and serves approximately 3 families. A new inlet and outlet structure, a new hypo-chloride contact chamber, and rehabilitation of the lagoon were completed in December of 2001. In 1992, the Town authorized a"wastewater system feasibility study"with the intent of establishing a regional plan for the Town's urban growth area. The study was prepared by RBD, Inc. Engineering Consultants. The study evaluated the long term needs of the Town for wastewater collection and treatment. The study as adopted by the Town provides that the existing wastewater treatment plant will be used until growth immediately surrounding the original town site dictates a move of the plant to the Lake Thomas site.At that time a new aerated lagoon treatment facility with a design life of 30 . years will be constructed. In August 2001, Jacobson Helgoth Consultants submitted the "Wastewater Feasibility Study Update" final draft report to the Town. The purpose of the study update was to revise the 1992 feasibility study. Information compiled in the study includes service area delineation, population growth projections, effluent limitations, trunk sewer routing, and treatment alternatives. II-31 Currently the treatment plant treats 75,000 gallons per day and is serving an estimated population of 1,000 people. The existing treatment plant Basins 1 and 2 can treat 180,000 gallons per day; however, improvements totaling approximately $300,000 will be required. These improvements include adding aerators, a baffle wall, and increasing the size of the interconnecting piping between Basins 1 and 2. It is felt that with these improvements the treatment plant will accommodate an additional 1,400 people or approximately 500 new homes. If Basin 1 were upgraded, the treatment plant capacity could be increased to 320,000 gpd. Improvements to obtain the additional 140,000-gpd capacity have been estimated to coast$600,000. Four alternatives were evaluated in the 2001 study for replacing the existing treatment plant. The four alternatives considered three alternative sites located in the Town's service area, and the fourth alternative includes pumping the flow to the St. Vrain Sanitation District. The plant location and the cost of the treatment plant and out-fall sewers for each alternative are indicated below: Location Estimated Cost 1-25 at North Creek - $5,746,000 North Creek above Lake Thomas $6,334,000 North Creek below Lake Thomas $6,344,000 St. Vrain San. Dist. $7,343,000 The consultant did not recommend an alternative. Some of the Town Trustees prefer the site located below Lake Thomas due to being able to serve the entire planning area without the need of adding pumping stations. Four additional sites below Lake Thomas are being investigated. The report recommended that a public hearing be conducted to obtain public input for the study results. Appropriate user tap fees have been developed for future expansions. User rates will be evaluated in 2004 to provide for additional II -32 funds for replacement of sewer lines that have exceeded their design life along with additional costs for operation and maintenance. The Town will be reviewing the financial aspects for constructing a new one million gallon per day treatment plant. In addition, the Town will need to determine when they want to discontinue making improvements to the existing treatment plant and move toward one of the new treatment plant alternatives. The Town expects to have approximate 20 to 50 building permits issued annually over the next few years due to completion of two major development projects: Coyote Run (151 plus lots) and Margil Farms (187 lots). Since the 2001 update the Town has issued approximately 60 building permits. Future building permits will dictate the implementation of wastewater treatment improvement projects. Saint Vrain Sanitation District The St. Vrain Sanitation District was created in 1986 to serve the area near the intersection of 1-25 and State Highway 119, commonly referred to as Del Camino, and the surrounding areas. As of June 2003 there are about 11,500 acres included within the district boundaries. The District's potential service area, as indicated in the 2001 208 Plan Update, includes about 43,000 acres. The District could readily serve additional areas upgradiant of the service area with gravity sewers if development occurs. The District's treatment plant is four miles downgradient from the Weld County Tri-Area Sanitation District treatment works. The potential exists for future consolida- tion, which would include treatment for a portion of the Dacono Sanitation District (a collection system district). The City of Longmont projects that it may need to construct additional treatment capacity after 2020 either at their existing plant or a new plant downgradient of the existing Longmont plant and within the St. Vrain Sanitation District Service Area. The District presently serves a small portion of Longmont located in Weld County. 1I -33 The District's secondary sewage treatment plant was constructed in 1987, along with a core collection system. This resulted in the elimination of 3 small treatment facilities in the Del Camino area. Five major line extensions along with numerous sub-division collection systems have been subsequently completed. Connections to the system through June 2003 include 2,551 residential taps, a 210-unit mobile home park, and 124 non- residential taps, totaling 3,904 Single Family Equivalents. The District's wastewater treatment plant has been converted from a 0.5 mgd aerated lagoon system to a mechanical plant with two 1.5 mgd extended aeration lagoon and clarifier modules, to provide a 3.0 mgd plant capacity. The new plant became operational in April, 2002. The District's discharge permit was renewed on February 1, 1998 and expired January 31, 2003. It will be renewed based on the completion of construction of the mechanical wastewater treatment plant. CDH&E site approval included a third 1.5 mgd module, (not being constructed at this time). Should treatment requirements exceed 4.5 mgd, each treatment module is designed for conversion to an activated sludge process with 5.4 mgd capacity, or a potential of 16.2 mgd capacity with conversion of all three modules. Area for future development at the plant site remains. Additionally, the plant is surrounded by large lakes (formerly gravel mines) and a no development easement. Weld County Tri-Area Sanitation District The Weld County Tri-Area Sanitation District serves the Towns of Firestone and Frederick, the unincorporated area of Evanston, and the Town of Dacono through a contract with the Dacono Sanitation District. The combined service population of the four communities is approximately 8,700, and the District currently has a total of about 3,025 taps. The District's 11-34 discharge permit rates the plant capacity at 1.5 mgd, and 1,659 pounds of BOD5 per day. Average flows are 0.64 mgd. Treatment is by two aerated ponds, with discharge to an unnamed ditch tributary to St. Vrain Creek. The District made improvements to its plant with additional aeration and chlorination facilities in 1986 and constructed 9,800 linear feet of 18"and 15" interceptor line in 1990. The current permit for the District expires on January 1, 2006. II -35 SOUTH PLATTE RIVER BASIN The South Platte River is the major drainage through Weld County, entering from the south and flowing into Morgan County on the east. In addition to the Cache la Poudre River, Big Thompson River, and St. Vrain Creek, its other significant tributaries are Big Dry Creek, Crow Creek, and Lone Tree Creek. Municipal dischargers in this lowest basin of the region include Ft. Lupton, Gilcrest, Hudson, Lochbuie, Platteville, La Salle, Evans, Pierce, Kersey, Keenesburg and Grover. Figure 11-4 locates the discharges of significance in the South Platte Basin in Weld County. Evans Since 1985 the City of Evans has operated its wastewater treatment plant (prior to this it was operated by the Evans Sanitation District). The service area population is estimated at 10,500, and present dry weather flows are about 0.98 mgd. Treatment consists of aerated lagoons followed by a polishing pond, chlorination, and dechlorination before discharge to the South Platte. The rated treatment capacity of 1.2 mgd should not be reached until after 2010. A new permit was issued to the City in 1994. The plant capacity was re-rated from 0.9 to 1.2 mgd in 1997. Infiltration of ground water into the collection system is a problem and should be reduced. The City plans to slip line the worst portions of the system. Grit removal facilities will be constructed, and sludge will be removed in 2003. A facility plan is currently being prepared and should be complete by the end of 2003. II -36 1 V° a s z e k, v N 3 1 •••• I o. Pierce ' A, C0L0-14 1 .,,i . . • i . L. * 'Is a''',_ ,../ • - • , • II I y a 1 r - \ ' • . COLD-14 • 4 _ " 'I. ) • • T • a a '' I • •% • • r 411 Imo\ •• Ilillik a at • . • I v 1 f a • ili - al ♦ • I •• i . aa4 • COLO-392 I, NI i COLD-392 • 4 , T ® , ` ♦ A 1 I CACHE LA POUDR �VER _it U5-34 e , e I • 2:4-, g - ,y Hill ••rkEv.ns 3°4/ �� Kersey \ I , \� �� , - °sue a .►. • �,; ��. La SalleIII _4 • fir lirO ' ON RIVER- e 5 I�T�E N0MPi • , e I a y' Fi b •4 Gilcrest a I t • bi ' • % n ' •I • d e e • e - lip Platteville a Q. l9. ® q' No • • _ . ® v A- e t I m OD s� VRPINCREK • a • ••• 5 ® , r' wr iv 4" r e � o e t t a Fort Lupton n I� ` � Keenesburg jj Till I i Hudson CO52 I kV. CO FIGURE I-4. v Dacono- • SOUTH PLATTE RIVER BASIN � ��f ' ' , �� - _,_ _� MUNICIPAL DISCHARGES y 12-04-03 /rrr ' o a ochbuie w�dc9u� r TRENNTAda s CaiMy <room`ielc 1 0 5 MILES Fort Lupton The City of Fort Lupton has one of the larger discharges directly to the main stem of the South Platte River. The discharge averages 1.12 mgd and includes a large infiltration contribution. The City's treatment facility is adjacent to the river along the upstream portion of Segment 1 of the Middle South Platte River. Population is estimated at 7000, and about 12 percent of the flow originates from commercial and industrial sources. The City has replaced its old plant with a new oxidation ditch secondary treatment plant. The new plant was brought on line in October 1993 and began discharging in November 1993. The annual average design hydraulic capacity of the plant is 2.75 mgd for domestic sewage plus cooling water from a major industrial contributor which began operations in mid-1994. The plant's organic loading capacity is 4,355 lb/day BOD5. The oxidation ditch is followed by clarification, UV disinfection, and aerobic sludge digestion. Biosolids will be de-watered and land applied to city parks or local farms at a rate of about 386 tons per year. Galeton Water and Sanitation District The Galeton Water and Sanitation District was created in 1990 to provide sewer service to the Town of Galeton, which was served by septic-leach field systems. The population served initially was 120 with a facility capacity of 185-person equivalents. The treatment system consists of three lagoons with a capacity of 0.0185 mgd. Discharge after chlorination is to Willow Creek, tributary to the South Platte River. The sewer system and treatment plant construction were completed in 1992. The current population served is approximately 145 plus 120 school children during the school year. Possible needs include aerator replacement and biosolids removal. 1I -38 Gilcrest The Town of Gilcrest provides sewerage service to approximately 1,160 residents. Treatment facilities include two aerated stabilization lagoons, a polishing pond, and chlorination;the discharge is pumped through an 18,000 foot 6 inch outfall that is partially by force main and the remainder flows by gravity to the South Platte River in the SE IA of the SEIA of Section 24, T4N, R67W. This outfall and other plant improvements were constructed in 1987 at a cost of $169,000. Rated capacity of the treatment plant is now 0.196 mgd, with an organic loading of 466 lb/day BOD5, and it should be adequate for more than twenty years. Current flows are approximately 0.8 mgd. The Town expects to line the polishing pond within the next five years. Gilcrest's discharge permit expires on January 31, 2004. There are no changes in hydraulic and organic landings from the previous permit. Grover Grover does not discharge from its facilities to any surface water. Present flows are approximately 0.011 mgd and rated capacity is 0.03 mgd, well beyond that needed to adequately serve the Town for the planning period. Treatment of sewage is provided by aeration basins with discharge to land via leaching beds. Hill-N-Park Sanitation District Hill-N-Park Sanitation District serves a residential development area in the western growth area of Evans. There are 1,600 domestic taps on the sys- tem, serving about 5,200 people. Projected growth by 2005 is about 6,260 people. The District also serves a small population outside its boundaries II-39 (Country Estates MHP). As of July 1998 the City of Evans assumed responsibility for the operation of the District system under an intergovernmental agreement. The District is to be dissolved in 2003. Treat- ment is provided by two aerated lagoons, a polishing pond, and chlorination before discharge to an unnamed ditch. The ditch is tributary to Ashcroft Draw and then to the South Platte River. Rated capacity of the Wastewater Treatment Plant is to 0.5 mgd. The District's permit is scheduled to expire on April 30, 2004. A wastewater utility plan is currently underway for the Hill-N- Park system. Hudson The Hudson wastewater facility was acquired by the Town of Hudson from the Hudson Sanitation District in 1997. The Town has assumed the role of operating agency for the facility and currently maintains the facility through town staff. The facility includes a combination of two aerated lagoons, a polishing pond, and chlorinated discharge to Beebe Seepe Canal. Studies are currently underway with a consultant to evaluate minor modifications to improve operating efficiency and enhance current operating capacity of the facility. The Town is in the process of adding an anaerobic pretreatment cell within Lagoon #1 to improve the lagoon system's performance. Biosolids were removed by contract from the lagoons in 1999, and the next removal is anticipated in 2004. Hudson is also exploring the construction for a second WWTP in the newly annexed Hudson Industrial Park north of Hwy 52 and east of WCR 47 or connecting to the new sub-regional facility in Lochbuie at WCR 6 and WCR 39. The current Permit No. is COG-58100,which expires on April 30, 2004. The facility is located in the NE Y of the SW '/. Section 3, Ti N, R65W. The u -40 capacity of the plant is 0.197 mgd. Present hydraulic loading is approximately 57% of rated capacity, and plant capacity is expected to be reached in 2007. Keenesburq Facilities at the wastewater treatment plant of the Town of Keenesburg, include an aerated lagoon, polishing pond, and chlorination. Hydraulic capacity of the plant is 0.1 mgd with a 8005 capacity of 231 #/day, using diffused fine bubble aeration. Current flows are about 0.081 mgd for a population of approximately 959. Discharge is initially to Sloan Reservoir, a private irrigation reservoir, and eventually to a dry ditch 30 miles from its junction with the South Platte River. The Town's permit expired on May 1, 2003, and they are in the process of getting it renewed. The polishing pond and a storage pond with 4-5 months' storage capacity were deepened in 1990-91 to control algae and increase storage to allow the operator to retain flows and have no discharge if effluent quality doesn't meet permit limits. Additional aeration capacity should be added to the lagoons, and expansion is also expected to begin within the next five years. Kersey The Town of Kersey provides wastewater collection and treatment for its approximately 1,410 residents, and the volume of wastewater flow is presently about 0.092 mgd. The treatment plant is an oxidation ditch-type activated sludge plant with discharge from the secondary clarifier to an evaporation/percolation pond for disposal. Monitoring of ground water is required. Capacity of the plant is 0.18 mgd, and it is adequate to provide service to the community for about the next two years. Kersey's discharge permit expired on October 31, 1995, and they are operating currently under 11-41 an extension. Due to the age of the WWTP, the Town has developed a facilities plan for the construction of a new WWTP by 2005. The new plant will probably be an activated sludge package—type plant with discharge to the South Platte River. La Salle Wastewater treatment facilities for the Town of La Salle include an aerated lagoon system with an effluent rock filter and chlorination before discharge to the South Platte. The rated capacity of the plant is 0.46 mgd, while flow is averaging 0.25 mgd for a population of about 2050. A projected population of about 2,300 by the year 2005 should be adequately served by this facility. Lochbuie The Town of Lochbuie is located in the Beebe Draw drainage basin just north of the Weld-Adams County line. The current population of the Town's service area, including Lochbuie and a portion of Bromley Park in Adams County, totals approximately 3,700 persons.The wastewater flows average approximately 300,000 gallons per day, with an organic loading calculated to be approximately 492 pounds of BOD5 per day. Treatment is currently provided by an aerated lagoon system with a combination of diffused air and surface aeration, a polishing pond and chlorination before discharge to the Beebe Seep Canal. The existing facility is rated at 360,000 gallons per day, with an organic loading capacity of 750 pounds of GODS per day.The Town is constructing a 10.0 million gallon per day mechanical facility, with the first phase having a hydraulic loading capacity of 1.5 mgd. The first phase components of the proposed mechanical plant include influent flow measurement, screening and grit removal, extended aeration activated II -42 sludge basins, final clarification and ultraviolet disinfection. Sludge stabilization will be accomplished through aerobic digestion and centrifuge thickening before the biosolids are hauled off-site for land application or other beneficial uses. Phase 2 components of the new plant will include primary clarifiers, additional aeration basins, and more digesters. The design for phase 2, bringing the capacity to 5 mgd, is now complete. The DRCOG "Metro Vision 2020 Clean Water Plan" provides additional wastewater management planning information for this overlapping service area. The two areawide plans will be kept consistent for planning purposes, and any planning information differences will be addressed through the memorandum of understanding between the Areawide on a case by case basis. r Pierce The Town of Pierce facilities include a triangular oxidation lagoon containing a submerged dike,dividing it into two cells. The north cell is aerated by three floating aerators, and the south cell acts as a polishing pond with no aeration. Discharge is then chlorinated and directed to three new rapid infil- tration beds for disposal. Capacity is 0.18 mgd, and current flows for about 950 residents and a meat processing plant are approximately 0.9 mgd. An influent flow recorder will be installed by the end of 2003, and a new downgradient monitoring well will be constructed if an appropriate site can be located. II-43 Platteville Platteville facilities include aerated lagoons,chlorination, and an outfall to the South Platte River. Capacity of the plant is 0.34 mgd hydraulically, and an organic load capacity is 494#/day BOD5. Existing flows for 2,581 residents are estimated to be 0.18 mgd. Flows discharged to the river are reduced due to evaporation, but algae in the three lagoons in the summer cause the BOD5 and TSS limitations to be exceeded at times. The Town modified the plant in 1992-93 by constructing a wetland treatment system in a portion of lagoon #3 to reduce algae growth and improve treatment efficiency. The wetlands have proven to be effective. The remainder of lagoon #3 was abandoned. Platteville planned to remove biosolids from lagoon #2 in 2001, but found there was not a substantial accumulation. Long-range planning that may include moving the treatment plant further downstream as one option has begun with the preparation of a facility plan. A change in classification of the receiving water to Class 1a Recreation will limit bacteria discharge in the next permit and require additional disinfection. Total ammonia limits will be about 25 mg/I I the summer. Weld County School District RE-3J The Weld County RE-3J School District operates a package treatment plant to serve Weld Central High School near Keenesburg. The plant consists of two aeration basins, two clarifiers, and UV disinfection, with a capacity of 0.015 mgd. Current hydraulic load is about 0.005 mgd and organic load is about 35#/day BOD5. Discharge is to the unclassified Lowline Canal ditch, and sludge removed is hauled to Denver metro for treatment. The District is planning the construction of a new middle school, which will also be served by the system. 11 -44 BIG DRY CREEK BASIN (Weld County) Big Dry Creek flows north from the Broomfield area into Weld County and into the South Platte River just south of Fort Lupton. The only municipal treatment plant in the Weld County portion of this basin is that of Northglenn. The City and County of Broomfield Broomfield is a suburban community located along US 36 Denver-Boulder Turnpike and consists of 33.6 square miles. The City and County's jurisdiction traverses the north Denver metropolitan area from the southwest boundary of Indiana Street and approximately 106`h avenue moving northeast across 1-25 and to the northeast boundary of Weld County Roads 8 and 11. In 1961, the City was located wholly within Boulder County; but in 1971 the corporate limits were expanded to include portions of Jefferson and Adams Counties, and in 1990 areas lying within Weld County were added to the City.At the November 3, 1998 statewide election, Colorado voters approved an amendment to the state constitution creating the City & County of Broomfield. On November 15, 2001, all areas within the City of Broomfield were detached from the other four counties - Adams, Boulder, Jefferson and Weld - and the newly created entity became the City&County of Broomfield. The areas within Weld County included in the City and County of Broomfield are generally between: • Weld County Road 11 on the east, • Weld County Road 8 on the north, • between Weld County Road 5 & 7 on the west and • State Highway 7 on the south. 11 -45 These areas are located in sections 22, 23, 26, 27, 34, and 35, T1 N, R68W as shown on the map on page 11-62. The City and County of Broomfield provides wastewater treatment and management services through its municipal wastewater reclamation facility.As outlined in the City and County of Broomfield's 1999 updated Utility Plan, approved by NFRWQPA, Broomfield is moving forward with the completion of a three-phase expansion of the Broomfield Wastewater Reclamation Facility to include biological nutrient removal, solids handling and wastewater reuse. The Colorado Department of Public Health and Environment has approved and issued the site application for phases one (1) and two (2). The existing design capacity identified in Broomfield's current CPDES discharge permit(effective August I, 2002) as Ouffall 001A is 5.4 million gallons per day(mgd) for hydraulic flow (30-day average) and 10,300 lbs. BOD5 per day for organic loading (30-day average). Following the completion of the first phase upgrade of the facility, the design capacity of the wastewater reclamation facility, identified as Outfall 001 B is 8.0 million gallons per day(mgd)for hydraulic flow(30-day average) and 13,760 lbs. BOD5 per day for organic loading (30-day average). Construction of the first phase of the expansion started in October of 2001 with specific treatment process substantial completion dates of September 2003, June 2004 and December 2004. The first phase of the project expands the wastewater treatment capacity to 8.0 mgd and adds nitrification, de-nitrification, and phosphorus treatment, solids dewatering processes and 6 mgd wastewater reuse treatment and pumping processes. The City and County of Broomfield has developed a 3,200 acre-feet per year reuse system utilizing Broomfield's western slope water in the effluent from the wastewater reclamation treatment plant. Phase two (2) of the expansion is projected to expand the advanced biological nutrient removal wastewater reclamation treatment facility to 12 million gallons per 11 -46 day (mgd) for hydraulic flow (30-day average) and 20,640 lbs. BOD5 per day for organic loading (30-day average). This phase is currently completing design work with construction projected to begin in late 2003. Phase 3 would ultimately expand the facility to a projected 16 million gallons per day (mgd)for hydraulic flow (30-day average) and 27,489 lbs. BOD5 per day for organic loading (30-day average). The current site location has the available land area to meet the space requirements necessary for the completion of all 3 phases. The following is the current and projected wastewater flows and organic loading in pounds of BOD5 through the year 2020: -Actual results Flow, 30-day Organic Loading, Flow, Organic Loading, Year Avg. 30-day Avg. Max Month Max Month in mqd in lbs. of BOD5 in mqd in lbs. of BOD5 2001* 4.39* 7,469* 4.95* 8,382* 2005 6.35 9,766 7.63 12,981 2010 7.62 11,324 9.14 15,550 2015 8.30 13,129 9.96 16,946 2020 8.66 13,680 10.40 17,694 Broomfield's biosolids management program consists of beneficially recycling methods. The current process consists of anaerobic digestion,on-site storage and subsurface application of the liquid digested biosolids on agricultural property. To ensure proper usage of the biosolids, the volume of each application is based on agronomic rates and crop rotations. In 2001, the City and County beneficially reused 1,879 dry metric tons of biosolids. In 1996 to ensure current and future land availability for the beneficial reuse of this nutrient-rich organic by-product of the wastewater treatment process, Broomfield purchased a 1400-acre working farm northeast of Gilcrest, Colorado. The farm consists of six parcels located between Weld County Roads 44 and 42 (North to II-47 South) and Weld County Roads 45 and 53 (West to East). The farm serves two purposes; first, it continues to be an active crop producing site where it is jointly managed by Broomfield and a local area farmer who leases out the cropland. Secondly, it provides a secure location for the beneficial reuse of the biosolids produced by Broomfield. To further enhance Broomfield's biosolids program, solids dewatering is being added during the phase 1 expansion and upgrade project. Adding the dewatering capacity provides Broomfield with several options in meeting the goals and objectives of the bio solids program. These options include: • The current practice of using liquid subsurface application methods; • Applying and subsurface incorporation of the dewatered biosolids; • Building an air drying facility for additional treatment and dewatering followed by subsurface incorporation. In June of 2002, the City and County of Broomfield was issued the fifth renewal of the Colorado Discharge Permit System (CDPES) permit. The renewed permit became effective on August 1, 2002 and will expire on July 31, 2007.As a result of the Water Quality Commission proceedings to adopt the Classification and Numeric Standards for the South Platte Basin, the renewed permit resulted in several new water quality stream standards being added to the discharge limitations. Those parameters added included: Whole effluent toxicity,Chronic,Total Ammonia, Cyanide,Arsenic, Beryllium,Cadmium,Chromium,Copper, Iron, Lead, Manganese, Mercury, Nickel, Selenium, Silver, and Zinc. The City and County of Broomfield planned and projected the additional discharge limitations and designed the expansion and upgrade of the wastewater reclamation facility to meet the listed parameters. The phase 1 construction costs associated u -48 with the new effluent limitations have been identified as $9.808 million in 2001 dollars. In June 1992, an intergovernmental agreement (IGA) with the City of Northglenn regarding the provision of wastewater treatment service for portions of the northeast section of the City and County of Broomfield allows for the two entities to work together in meeting the wastewater service needs when in the best interest of the parties. Broomfield is continuing to evaluate this option and costs. The City and County of Broomfield and the City of Northglenn will continue to work together along with their neighbors to address any forthcoming requirements. Northqlenn The Northglenn Wastewater treatment facility is located in the West 1/2 of Section 36, Ti N, R68W in Weld County at the intersection of Weld County Roads 2 and 11. Treatment consists of an aerated lagoon system with discharge through Bull Reservoir to Bull Canal, Thompson Ditch, or Big Dry Creek.There are three cells in each of two parallel trains of aerated lagoons with a total rated capacity of 6.5 mgd. A 4200 acre foot reservoir (Bull Reservoir) is also part of the treatment facility in order to facilitate Northglenn's water management exchange program with Farmers Reservoir and Irrigation Company (FRICO). Northglenn will require a capacity of 4.94 mgd to provide service within their corporate boundaries at build out in 2020. Their current average daily flow is approximately 3.9 mgd. There is 1.56 mgd of unused capacity available above their need at build out. This capacity is available to the Cities of Broomfield and Thornton, unincorporated Weld County, and others within the vicinity of the treatment plant who may need wastewater treatment service. II-49 The City of Northglenn is the responsible operating and management agency for areas within its corporate boundaries as identified in the Denver Regional council of Governments (DRCOG) Clean Water Plan. Northglenn also provides wastewater service to two enclaves of the City of Thornton that are adjacent to Northglenn corporate boundaries. Wastewater is currently collected within these areas and transported to their treatment plant via a pressure interceptor. Northglenn has been designated as the responsible management and operating agency for their wastewater treatment plant (WWTP) area and as operating agency for areas adjacent to the treatment facility. Northglenn's service area for Weld County is as reflected on page II-97. Northglenn was designated as the operating agency for this area by NFRWQPA in 1989. There is a joint management agency agreement between Weld County and Northglenn that defines management and operating agency roles for the unincorporated areas. In the Lower South Platte Study prepared by the DRCOG, the Northglenn WWTP was recommended as the most cost effective solution for providing wastewater treatment service for much of the Big Dry Creek Basin north of 136th Avenue in Adams County.Additionally, areas in Weld County adjacent to the treatment facility can be reasonably served by the Northglenn plant. Some of these areas have recently been annexed by the City and County of Broomfield and Thornton. The City of Northglenn has entered into an IGA with The City of Thornton and Metro Wastewater Reclamation District defining roles for the service area within Weld County that has been annexed by Thornton. This IGA defines management and operating status for this area. The projected populations to be served in the areas of Northglenn's service area will be dependent on the amount of development which occurs. Thornton and Broomfield have made planning projections for their respective areas. Broomfield's projections in their Wastewater Master Plan Update,for the areas to be served by Northglenn, are significantly higher than DRCOG's Traffic Analysis Maps and u -50 Database(TAZ)figures. Broomfield's waste load projections for 2010 are 0.98 mgd compared to DRCOG's 0.3 mgd. Since these figures are rough projections and adequate capacity currently exists at Northglenn's plant to serve these areas, capacity should not be an issue until after 2010. The excess rated capacity in Northglenn's WWTP beyond what they will require to serve their own development by 2020 (1.56 mgd) will be adequate to serve development until 2010 in the areas of Broomfield County and Thornton in Weld County. The map of the areas to be served in Weld County is shown on page II- 109. Westminster and Broomfield both operate wastewater treatment plants that discharge to Big Dry Creek upstream of the Northglenn facility. Water quality in Big Dry Creek generally meets the standards for dissolved oxygen and pH, while the fecal coliform standard is exceeded at times. Data indicates this is not from permitted treatment plants. Additional effluent discharged to the creek from the Northglenn plant should not have an adverse effect on the stream's quality as long as discharge permit effluent limits are met. Monitoring is performed by Northglenn, Broomfield, and Westminster; DRCOG has modeled the creek for D.O. No impacts have been identified with full utilization of the Northglenn facility at 6.5 mgd. Additional modeling for un-ionized ammonia was conducted. This modeling has been incorporated into Broomfield's, Westminster's and Northglenn's permits. • Northglenn's NPDES permit was reissued Jan.27,2002. A compliance schedule to meet new effluent ammonia limits by June 1, 2006 was included. A utility plan is being developed to evaluate alternatives to meet these requirements. No impacts to water rights are expected if Northglenn discharges treated wastewater to Big Dry Creek. II-51 Regional Facility A new regional wastewater treatment facility (Lower South Platte Regional Facility) is the designated long-term wastewater management strategy for the northern portion of the South Platte Urban Watershed. The minimum participants in the Northern Regional Facility Study are the City of Brighton, South Adams County Water and Sanitation District, and Metro Wastewater Reclamation District. In addition, Adams County, Weld County, Commerce City, City of Thornton, City of Northglenn and North Front Range Water Quality Planning Association should be closely involved in the planning effort. South Adams and Metro District wastewater treatment plants are expected to continue to provide wastewater service for parts of the service areas. The existing Brighton facility may be phased out if a decision is made to proceed with the regional treatment plant. For planning purposes, the general siting option for the Lower South Platte Regional Facility is the northern portion of the Central Adams service Area, in Adams County. The Lower South Platte Regional Facility construction trigger date needs to be reasonably consistent to accommodate all participants. The Northern Regional Facility Study should have a recommendation ready for the 2001 Metro Vision Plan Assessment Process. Work done as part of a wastewater utility plan will form the basis of the Clean Water Plan amendment. Based on current planning information, a regional facility is needed by about 2005 to serve Brighton, portions of Commerce City and Thornton, and potential future service areas in Adams County. By 2005, wastewater flows are expected to exceed the capacity of the Metro District's Brantner Gulch pump station and force main system. Diverting flows to a new regional facility may be more cost effective than expanding the Brantner system. The Lower South Platte Regional Facility could replace the Brighton treatment plant. The South Adams plant will continue to operate and treat wastewater from the southern portion of its service area with all northern wastewater flows diverted to the new plant. Any new wastewater service area within Adams County should be treated by the Lower South Platte Regional Facility. II -52 The initial capacity of the Lower South Platte Regional Facility will be established through the wastewater utility planning process. Consequently, no maximum size will be designated for this facility at this time. The initially estimated facility footprint acreage is about 80 acres, which should provide an adequate buffer and space for expansion. The facility design should include an evaluation for advance treatment of nitrogen with nitrification and de-nitrification systems. The water quality components and potential effluent limits for the regional facility will be addressed through the utility planning process. II -53 r B. DATA SHEETS AND SERVICE AREA MAPS ',• . - .. e•Wit- .. q P 4 ,,, ..: NA, • tt. z • I � H k. 9 M �y� �..' l. '1K ,, hr 1 NFRWQPA 2003 WATER QUALITY PLAN UPDATE Major Point Source Inventory Data Operating Agency: NPDES Permit#: CO-0043711 Town of Ault Permit Expires: 03/31/99 - extended Description of Treatment Facilities: Lagoons Discharge Location: Percolation to groundwater in Section 13, T7N, R66W, one-half mile South of Ault. Stream Segment Classification: N/A Service Area Population: Existing 2005 2010 2015 2020 1,440 1,565 1,880 2,195 2,509 Capacities: Design Existing Year at 80% Year at 95% Capacity Load Design Design Flow (mqd) .12 0.086 2003 2010 Organic (lbs./day BOD5) 279 177 Effluent limits required beyond secondary to meet stream standards: N/A Estimated 5-year construction needs: The plant will be upgraded to an aeration system. The plant capacity will need to be increased as growth occurs. Ault plans to make improvements to increase hydraulic capacity to 0.250 mgd before 2005. The primary lagoon will be deepened and divided into three cells and the ponds lined. Diffused air and disinfection will be added. II -54 / r / i i z M99a / % �) j 1 / CU 9 i j/ " 1 V. (' CY) ".' / . . ,' m .......4p?... ?.... o, I- J\ � �' c� J -H Q Q 6 ,--' Li NFRWQPA 2003 WATER QUALITY PLAN UPDATE Major Point Source Inventory Data Operating Agency: NPDES Permit#: CO-0021083 Town of Berthoud Permit Expires: 06/30/06 • Description of Treatment Facilities: Main Plant: Oxidation ditch, secondary clarification, chlorination and aerobic sludge digestion, land application of sludge by contract hauler. Serenity Ridge Plant: Sequencing Batch Reactor with UV disinfection. Discharge Location: Unnamed tributary to Little Thompson River at SE' Section 23, T4N, R69W, and an epheral drainage tributary to the Little Thompson River in the NW1/4 Section 23, T4N, R68W. Stream Segment Classification: Class 2 Warm Water Aquatic Life, Class 1 Recreation, Agriculture. Service Area Population: Existing 2005 2010 2015 6,600 7,000 8,050 9,250 Capacities: Design Existing Year at 80% Year at 95% Capacity Load Design Design MAIN Flow (mqd) 0.904 0.83 2001 2003 Organic (lbs./day BOD5) 1,300 1,300 1997 1999 SERENTIY RIDGE Flow (mqd) 0.03 - 2006 2007 Organic (lbs./day 6O05) 52 -- 2006 2007 Effluent limits required beyond secondary to meet stream standards: None Estimated 5-year construction needs: The major I/I reduction project completed in 1996 accomplished a significant reduction in flow. Future plans include continued rehabilitation of manholes and sewer lines within the Town. A new digester was constructed at the new regional treatment plant site in 2000. A new plant should be constructed at the site by 2004. A regional plant to serve the 1-25 vicinity should be constructed by 2007. • II -56 �� .�.I, _I � _ 1 itillar_,;, , I . Nr - , ."11 , id (' ' • r r , ------; r - .. n 15N T4N _ I �' L 5r it � - r NIlip I 4. III — 11 '11 5 �� // d / /fa y = _._. Ili_./1.c.. /:i._ .-T - _. 75 • F -_ _4 _ i� II / / �A 1'i i .—..rr'�'T ice/ 1 !..—.. ..#..—..—.. � / j.-- ..r.,..r. �/ �. , /j r F �5 ao c c- / ibso 29 28 C 1 ; 1 )_ I ;a 35 4 � �.� �. ....—..- . Larinier Loultty_/TIN tT co t r�s - �w,, Boulder County 3N 3 3 o{ - . _ ii BERTHOUb < < I_._..! Berthoud ; Loveland ii 10 2.0 14 15 �' ...} ,.9, /. / c �.-b , , Ike - fr . c'3,-1{1. �c\` ■ \e<..ld ' miles ,, ^" yr m 1 ._ I 12-04-03 NFRWQPA 2003 WATER QUALITY PLAN UPDATE Major Point Source Inventory Data Operating Agency: NPDES Permit#: CO-0020478 Boxelder Sanitation District Permit Expires: 07/31/05 Description of Treatment Facilities: Lagoons— 2 aerated lagoons, 2 polishing ponds, chlorination, dechlorination. Discharge Location: Boxelder Creek near its confluence with the Cache la Poudre River. Stream Segment Classification: Class 2 Recreation, Agriculture, Class 2 Warm Water Aquatic Life Service Area Population: Existing 2005 2010 2015 2020 Est 12/31/02 9,678 11,478 14,478 17,478 20,478 Capacities: Design Existing Year at 80% Year at 95% Capacity Load Design Design Ann Avg 2002 Flow (mqd) 2.34 1.52 2007 2013 Organic (lbs./day BOD5) 3,200 1,800 2008 2012 Effluent limits required beyond secondary to meet stream standards: N/A Estimated 5-year construction needs: I/1 correction/removal, upgrades to the existing plant to increase its hydraulic and organic capacities, possibly building collector/ interceptor lines and additional pump stations. II-58 t nCC I E i r ij \ \ I IL U �a �� R zz� 19 � 2I i •i 1 yy / �J - 1oR i qq - � — � _ r — L _ • --- ._-; _I I . '34 lk, 35C 1 / 1 1 , i i( is i- _EA I - - - r I� , TON Ir I r d' 'St i / �- ,/,;„/,•/./ ,,mil ) F s I ( 1 �) RI "//� / I I — z1 � d\'`� r z"it \ I, 6 . I ,% r 1 i S —1 I j `f / qi m I H `:.s rt{ 1 ,..I,.. ND ._.. I s 4a �� _� �- j a i I E- I I` r I T6N i I PIS I I , l I a rc I I I 1. I I I I Ii_ • BOXELDER SANITATION DISTRICT Boxelder 5. D. WellingtonIf Windsor �i 0 1.0 2.0 I 15 Fort Collins 5. D. U miles 12-04-03 NFRWQPA 2003 WATER QUALITY PLAN UPDATE Major Point Source Inventory Data Operating Agency: NPDES Permit#: CO-0026409 City and County of Broomfield Permit Expires: 7/31/07 Description of Treatment Facilities: Preliminary treatment, primary and secondary settling, anoxic and anaerobic basins, integrated fixed film activated sludge secondary and biological nutrient removal, UV disinfection, anaerobic digestion, solids dewatering, land applications of biosolids, reuse water filtration and pumping. Discharge Location: Big Dry Creek and Great Western Reservoir in Broomfield County. Stream Segment Classification: Big Dry Creek - Class 2 Warm Water Aquatic Life, Recreation Class 2, Agriculture. Great Westem Reservoir- Class 2 Warm Water Aquatic Life, Recreation Class 2, Agriculture. Service Area Population: Existing 2005 2010 2015 2020 40,621 51,400 59,600 69,100 72,000 Capacities: Design Existing Year at 80% Year at 95% Capacity Load Design Design Flow(mgd) 5.4 5.02 1997 2004 8.0phase 1 5.02 2005 2007 12.0phase 2 5.02 2012 2020 Organic(lbs./day BODO 10,300 8,382 2002 2004 13,760phase 11 8,382 2010 2008 20,640phase 12 8,382 2013 2020 Effluent limits required beyond secondary to meet stream standards: Inorganic limits include ammonia and cyanide. Metals include arsenic, beryllium, cadmium, chromium, copper, iron, lead, manganese, mercury, nickel, selenium, silver and zinc. Estimated 5-year construction needs: The City and County of Broomfield has completed phase 1 design efforts to expand and upgrade the City and county's 5.4 mgd secondary treatment facility to an 8.0 mgd advance nutrient removal and 6.0 mgd reuse reclamation facility. Construction began in October 2001. Substantial completion dates for specific treatment processes under construction during phase 1 are September2003, June 2004 and December 2004. Phase 2 design work began in late 2002. Phase 2 construction is projected to begin prior to the completion of phase 1. Phase 2 will expand the City and County's Wastewater Reclamation Facility to 12 mgd. The projected phase 2 construction is expected to be completed in 2006. II -60 //\\\ ./.// 7 im II I ill TIN BROOMFIELD �', {` ' a, !----1. Broomf ieLd ! ill f 1 I �r � I 1/7,' brie 1i, r Northgf onn i nStVrain5. D. �� 0 0.5 1.0 ! � � • • Weld County a Adams County miles 11-04-03 NFRWQPA 2003 WATER QUALITY PLAN UPDATE Major Point Source Inventory Data Operating Agency: NPDES Permit#: N/A Dacono Sanitation District Permit Expired: N/A Description of Treatment Facilities: Collecting system to transport sewage to the Weld County Tri-Area Sanitation District treatment facilities. Discharge Location: Weld County Tri-Area Sanitation District Stream Segment Classification: N/A Service Area Population: Existing 2005 2010 2015 2020 3,864 4,099 4,752 5,509 6,366 Capacities: Design Existing Year at 80% Year at 95% Capacity Load Design Design Flow (mqd) N/A 0.42 N/A N/A Organic (lbs./day BODE) N/A Effluent limits required beyond secondary to meet stream standards: N/A. Estimated 5-year construction needs: An interceptor sewer extending to the Fort Lupton wastewater treatment plant for development that will occur to the south and east of the current city core. r II -62 res"- 5 ,� IdN I I N �3 3 N I r= i � N v v 1 I S ;/ �j - �` v" I DACONO SANITATION DISTRICT bacono 5. D. St Vrai n S. D. _! Weld County Northglenn Tri-Area 5. D. 0 0.5 1.0 miles 12-0103 NFRWQPA 2003 WATER QUALITY PLAN UPDATE Major Point Source Inventory Data Operating Agency: NPDES Permit#: CO-0023116 Town of Eaton Permit Expires: 04/30/04 Description of Treatment Facilities: Oxidation ditch, secondary clarification, disinfection, aerobic digestion, drying beds. Discharge Location: 30 yards south of East Collins Street in Eaton Draw. Stream Segment Classification: Class 2 Warm Water Aquatic Life, Class 2 Recreation. Service Area Population: Existing 2005 2010 2015 2020 3,600 4,160 5,850 6,760 8,000 Capacities: Design Existing Year at 80% Year at 95% Capacity Load Design Design Flow (mqd) 0.340 0.250 2004 2004 Organic (lbs./day BOD5) 887 704 2004 2004 Effluent limits required beyond secondary to meet stream standards: N/A Estimated 5-year construction needs: Plans are currently being made to construct a new facility or to expand the existing plant capacity to 0.75 mgd by 2005. An AADC sludge drying system is also proposed. II -64 I , il T H 1 1 y23 c4 I v ]g 4LI 1 N 26 2%; l:'�+ -8 i = -- i ! ) i 35 •iex»xxHxxeu+� '�� "E ry +e...) r4M4$V "fit - �Yji -i i_ �� I '' N r E IAN tet `, i �I T 6 3 3 VD In 1 CE CC I \y k 1 12 7 8 i 16 17\,_ 18 EATON . r•-•-' Eaton L 0 0.5 1.0 miles 120403 NFRWQPA 2003 WATER QUALITY PLAN UPDATE Major Point Source Inventory Data Operating Agency: NPDES Permit#: CO-0045926 City of Erie Permit Expires: 1/31/08 Description of Treatment Facilities: Activated sludge with secondary clarification, ultra- violet disinfection.* Discharge Location: To Coal Creek, Segment 78 in the SE corner, NW/. Sec. 18, TIN, R68W, approximately 21 miles upstream of the confluence of Coal and Boulder Creeks. Stream Segment Classification: Class la Recreation, Class 2 Warm Water Aquatic Life, Agriculture. Service Area Population: Existing 2005 2010 2015 2020 7,218(PE) 12,015 25,000 31,500 37,500 Capacities: Design Existing Year at 80% Year at 95% Capacity Load Design Design Flow (mqd) 0.80* 0.6 2001 2002 Organic (lbs./day BOD5I 1,764 1,329 2001 2002 *A site application was approved to rerate the capacity of the existing treatment plant form 0.6 mgd to 0.8 mgd. Another site application was also approved to expand the treatment plant from a capacity of 0.8 mgd to 1.2 mgd. Effluent limits required beyond secondary to meet stream standards: Ammonia removal, anticipated most stringent limits to be 6.6 mgA ammonia nitrogen for November thru February for discharge to 0.8 mgd. Fecal coliform bacteria, 200 organisms/100 ml. Estimated 5-year construction needs: Expansion of the existing treatment system from 0.8 mgd to 1.2 mgd is currently under construction and is expected to be completed by Spring 2004. II -66 , , , IT a , j! _, j H. ,1H, ,,i_ , . .., i , .. ,i,I, ii /'^, bla IL I ' rII III 3 i t •� j' if TIN �J� .1 , f KY¢ / - • I \ 1 qi 1" . Ill Ii I r -ri/ I { �� .._. sue`•' , if , i Adams cwmy ERIE 1.—..! Erie = , uI Ii---P St Vrain S. b. bacono 0 1.0 2.0 miles 12-01-03 NFRWQPA 2003 WATER QUALITY PLAN UPDATE Major Point Source Inventory Data Operating Agency: NPDES Permit#: CO-0020290 Estes Park Sanitation District Permit Expires: 07/31/2006 Description of Treatment Facilities: Flow equalization, activated sludge, clarification, chlorination/de-chlorination, aerobic sludge digestion and land application. Discharge Location: Big Thompson River, Segment 2 in the SW'A of SW !4 of Section 19 & NW% of NW% Section 30, T5N, R72W. Stream Segment Classification: Class 1 Cold Water Aquatic Life, Class 1 Recreation, Agriculture, Water Supply. Service Area Population: Existing 2005 2010 2015 2020 Permanent 3350 3475 3745 4035 4350 Transient/ Seasonal 3400 3475 3650 3850 4100 Capacities and Loads: Design Existing Year at 80% Capacity Load Design Flow (30 day peak mgd) 1.5 0.755 >2020 Organic (30 day peak lbs./day BOD.) 3300 1285 >2020 Effluent limits required beyond secondary to meet stream standards: Currently None. Estimated 5-year construction needs: Short-term improvements include the addition of a building to cover the headworks of the treatment plant Long-term improvements include possible clarifier modifications as flow increases dictate. Also lower effluent limits for metals may require improvements unknown at this time. Collection line replacements will continue on an annual basis. II -68 ) ) ) h I �� 1 I iy ESTES PARK S. b. \ l��! [ --! Estes Park 5. b. rr 1 0 0.25 0.5 } miles ,:n,-0a L NFRWQPA 2003 WATER QUALITY PLAN UPDATE Major Point Source Inventory Data Operating Agency: NPDES Permit #: CO-0020508 City of Evans Permit Expired: 09/30/99 - extended Description of Treatment Facilities: Two aerated lagoons, polishing pond, chlorination and dechlorination Discharge Location: Segment 2, South Platte River in the SE % of Section 20, T5N, R65W. Stream Segment Classification: Class 2 Warm Water Aquatic Life, Class 2 Recreation. Service Area Population: Existing 2005 2010 2015 2020 City of Evans 10,500 11,600 14,700 18,850 20,000 Urban Growth Area 10,600 11,800 15,250 19,000 20,800 (Service Area) Capacities: Design Existing Year at 80% Year at 95% Capacity Load Design Design Flow (mqd) 1.2 0.98 2003 2010 Organic (Ibs./day BOD5) 2,772 1,879 >2,010 Effluent limits required beyond secondary to meet stream standards: None Estimated 5-year construction needs: 1) Continue monitoring the collection system to identify infiltration problems. Repair or replace inadequate lines as funds allow. 2) Install a new influent measuring device, pumps, and screening equipment. II -70 ) ) ) .'1', -.. -/r/ - - ' iri'v !' 1117://- 1 // . \\...... 1 -.�• i EVANS ; / • / � i . Evans i .e' it- T5N 'P[_ I [i La Salle .w�� QDt Li- Hill-N-Park 5. b. '' i 0 0.5 1.0 miles ,12-04-O3 V / - /� T-� ` NFRWQPA 2003 WATER QUALITY PLAN UPDATE Major Point Source Inventory Data Operating Agency: NPDES Permit#: CO-0026425 City of Fort Collins Permit Expires: 07/31/05 Description of Treatment Facilities: Conventional secondary treatment facilities consisting of primary clarification, trickling filtration, biofllters, activated sludge, secondary clarification, chlorination, dechlorination (UV at MWRF); and biosolids thickening, digestion, composting and beneficial use facilities. Discharge Location: MWRF outfall 001A to Segment 11, Cache La Poudre River, DRWF outfall 002D to Segment 11, Cache La Poudre River, DWRF outfall 0028 to Fossil Creek Ditch; and DWRF outfall 0058 to Rawhide Power Plant. Stream Segment Classification: Cache la Poudre, Segment 11: Class 2 Warm Water Aquatic Life, Class 1A Recreation, Agriculture. Service Area Population: Existing 2005 2010 2013 2020 119,000 123,400 133,600 139,500 142,906 Capacities: Design Existing Year at 80% Year at 95% Capacity Load* Design ** Design ** Flow(mqd) 29 17.0 2002 2006 Organic (Ibs./day BOD5) 68,675 38,106 none none projected * Max month in 2002 ** This assumes flow from Anheuser-Busch. Effluent limits required beyond secondary to meet stream standards: Outfalls 001A, and 002D: Total Residual Chlorine and Chronic Whole Effluent toxicity. Future possible limits of concern: ultra low level mercury, total inorganic nitrogen, phosphorus. Estimated 5-year construction needs: At DWRF—2006-2007: Add a third aeration basin and final clarifier, and a WAS/RAS pump station on site, and bar screen/screenings press. Decommission Resource Recovery Farm. 2003-2004: Provide enhanced odor control for solids. II -72 D o NaI i _ , _,..„1.. \; �. • f ,I I _' \ _.__ — -e .. \ �, ..f., -,-....---.._.. ..—.7.....,....L..,.._....„ ,� ) -.� �..�I III ,r ._ , I - , . cc, _ _ I 0 , , . .. ,.� •t 'r �: , R) x ra-ri —3 1 CL ��A\ I NN ( \ . ( /� ..moo AI >3,- V. . ,, r iii j iI. - L` -y� �- r L. i„,>,"� � .. ��v, �_ t r J. }- t ill . . - "� - L ..4' , , H - y.\\\,..,,,,... ..,-- n,wieX Rt».rs.MrlMw �r.��a«w.xt;N„„.. ,,„„, i �' r--1— �I ' ��• ‘ '" -1` ♦ es% ____ r . t \V - - ursw ' xrxw�xxxxw«w m:::xnm� mxrnxme..-r,.A�xxdrxrx', i -1 I ) i_ _. _ __ I ''''''' *, _,_ _ �__ �� r =� A ' :'.41," IV,y'a tiff t ./ -'f ,`�- --- -L1---- , , , c— - I ' ,... I� / I 'a4 z z i � 11\2 // :f\ - -*di s y r swlr • u. r 1, N vA `'' ck.."n», �_', ' t - - w Q 7 r I. ""^..S x:xxxxnrcxxmrvrxx mx exwd; xtx x.r x: I %of r -�' N\ \ , y. . f, / i i 1TlT1Jt1TH.i m { / .5a _ - ,__ _1- -\, , , ,,,, , • V A V AA r A � a I \ �\\\-") \ v N I// \ NFRWQPA 2003 WATER QUALITY PLAN UPDATE Major Point Source Inventory Data Operating Agency: NPDES Permit#: CO-0021440 City of Fort Lupton Permit Expires: 12/31/04 Description of Treatment Facilities: Oxidation ditch secondary treatment operated in complete mix aeration made, clarification, and UV disinfection. Biosolids are treated in aerobic digesters, dried, and land applied. Discharge Location: South Platte River in the SE % of the SW 3 of Section 31, T2N, R66W Stream Segment Classification: Class 2 Warm Water Aquatic Life, Class 1, Recreation, Agriculture. Service Area Population: Existing 2005 2010 2015 2020 7,000 7,283 8,041 8,878 9,802 Capacities: Design Existing Year at 80% Year at 95% Capacity Load Design Design Flow (mqd) 2.75 1.12 >2020 Organic (lbs./day BODE 4,355 1,457 >2020 Effluent limits required beyond secondary to meet stream standards: None Estimated 5-year construction needs: A major new lift station and interceptor to serve new city growth, upgrade of some lift stations and force mains, and 1/1 study. 11 -74 ) ) r I I i T2N L71 T1N r I I- I ' I t i I 1 — FORT LUPTON ____ Fort Lupton `- 0 0.5 1.0 miles 12-0443 NFRWQPA 2003 WATER QUALITY PLAN UPDATE Major Point Source Inventory Data Operating Agency: NPDES Permit#: COG-582030 Fox Acres Community Services Corp. Permit Expires: 07/31/04 Description of Treatment Facilities: Aerated lagoon, polishing pond, chlorination. Discharge Location: Columbine Creek in the SE 4, SW%, Section 22, T10N, R73W, tributary to North Fork Cache la Poudre River, Segment 8. Stream Segment Classification: Class 2 Cold Water Aquatic Life, Class 1 Recreation, Agriculture. Service Area Population: Existing 2005 2010 2015 148 188 315 380 Capacities: Design Existing Year at Year at Permitted Capacity Load 80% Design 95% Design Flow (mod) 0.035 0.07 0.018 max. 2004 2009 Organic(lbs./day BOD5) 62 125 35.0 max. 2004 2009 Effluent limits required beyond secondary to meet stream standards: None Estimated 5-year construction needs: None, however the company is currently requesting an increase in their permitted flow to 0.07 mgd. II -76 ) ) ) 5 f 1 ' 1 1 1 ..--‹,- _.... -. 1 a -- - / 1 IU - — , r. _ f q n � i �4 1 c.r / \ C / i FOX ACRES -.w= rskrzt _if Fox Acres T1ON 3 0 0.2 0.4 co 1 1 414 y miles 12-04-03 r fi NFRWQPA 2003 WATER QUALITY PLAN UPDATE Major Point Source Inventory Data Operating Agency: NPDES Permit#: CO-0043320 Galeton Water& Sanitation District Permit Expires: 5/31/04 Description of Treatment Facilities: Three (3) basin sewage lagoon treatment, 2 aerators plus chlorination, dechlorination. Discharge Location: Willow Creek, a tributary of Lone Tree Creek and the South Platte River. Stream Segment Classification: Class 2 - Warm Water Aquatic Life, Class 2 - Recreation, and Agriculture. Service Area Population: Existing 2005 2010 2015 265 280 320 360 Capacities: Design Existing Year at 80% Year at 95% Capacity Load Design Design Flow (mqd) 0.0185 0.01 >2020 Organic (lbs./day BOD5) 38.5 18 >2020 Effluent limits required beyond secondary to meet stream standards: None Estimated 5-year construction needs: An evaporation pond/wetlands project in about 4 years.*The District will investigate wetlands disposal of plant effluent and use this method if it is feasible. Aerator replacement and biosolids removal may be needed. II -78 Pa' T7N I- - - - - f__ T 6 N ' 3 3 LJ J ,, 1/43 - - - - CY 1 i II i I � I I i I ,, 1 GALETON I_J Galeton 0 0.2 0.4 • miles 12-04-03 NFRWQPA 2003 WATER QUALITY PLAN UPDATE Major Point Source Inventory Data Operating Agency: NPDES Permit#: CO-0041653 Town of Gilcrest Permit Expires: 01/31/04 Description of Treatment Facilities: Aerated lagoons, polishing pond, chlorination, and dechlorination. Discharge Location: South Platte River in the SE 14 of SEA of Section 24, T4N, R67W. Stream Segment Classification: Class 2 Warm Water Aquatic Life, Class 1 Recreation, and Agriculture. Service Area Population: Existing 2005 2010 2015 1,160 1,200 1,300 1,300 Capacities: Design Existing Year at 80% Year at 95% Capacity Load Design Design Flow (mgd) 0.196 .1 Beyond 2010 Organic (Ibs./day BOD5) 466 160 Beyond 2010 Effluent limits required beyond secondary to meet stream standards: N/A Estimated 5-year construction needs: Lining of number three pond. 11 -80 r i { _ 1 1, - J i I T 4 N I HD a I I GILCREST L _i GI'crest I 0 0.2 0.4 I miles 12-04-03 NFRWQPA 2003 WATER QUALITY PLAN UPDATE Major Point Source Inventory Data Operating Agency: NPDES Permit#: CO-0040258 City of Greeley Permit Expires: 07/31/05 Description of Treatment Facilities: Primary and secondary settling, activated sludge secondary treatment, chlorination, dechlorination, anaerobic digestion, and land application of biosolids. Discharge Location: SW 4, SW 4, Section 4, T5N, R65W to the Cache la Poudre River at approximately 5 miles above mouth Stream Segment Classification: Class 2 - Warm Water Aquatic Life, Class 1a Recreation, and Agriculture. .-r Service Area Population: Existing 2005 2010 2015 2020 83,250 86,000 95,000 105,000 115,000 Capacities: Design Existing Year at 80% Year at 95% Capacity Load Design Design Flow (mqd) 14.7 8.34 >2020 Organic (lbs./day BOD5) 49,470 21,493 >2020 Effluent limits required beyond secondary to meet stream standards: 30 day average limit for total ammonia ranges between 5.0 and 20.0 mg/L, depending upon the month and the effluent flow. Estimated 5-year construction needs: Construction of odor control measures at the WPCF. Greeley expects a hydraulic capacity rerating of 16.0 mgd at permit renewal in 2005. The City is studying biosolids treatment options and using UV disinfection for possible plant improvements. No other needs exist within the next five years. II-82 uMo�su�or � � - __ -_,c,�r U 0'2 0'i 0 ' r L I Itipd_N_II ,Hal Cr• A3'133210ir '� - , �_� 1 _ ' — . �" I // NN % i / 4: I �j a i y l - / 1, i wd _.J_..,..._‘' f/, G+fW�4 ...(.L.�. I ..�..qr. ..� 12 �r_.._ _ ��.• ._ y., •• _ cd• ,-a _. o _� I Pier i 1 fT i �. -.N...........NI1N., — - : I I I l I , I I fi - --� I i ,`•J JIK.I.•--^ 04•4,,,„ti, £ %%NI\......WC I # I -._, , _ �,' N91 •.,,ww,,,,µ, A ..,14 i- I e I . I _ .. 1 I NFRWQPA 2003 WATER QUALITY PLAN UPDATE Major Point Source Inventory Data Operating Agency: NPDES Permit#: No Permit Town of Grover Permit Expires: Description of Treatment Facilities: Aeration pits, discharge to land. Discharge Location: NW Y of NW 3d of Section 4, T10N, R61W Stream Segment Classification: N/A Service Area Population: Existing 2000 2005 2010 140 150 160 Capacities: Design Existing Year at 80% Year at 95% Capacity Load Design Design Flow (mqd) 0.03 0.01 Beyond 2010 Beyond 2015 Organic(Ibs./day GODS) Effluent limits required beyond secondary to meet stream standards: N/A Estimated 5-year construction needs: None 11 -84 A / / I I I i I .. T7N i T 6 N I 3 I jIr I n I I 1 I 1 I \st i \\ / -f I I N GROVER r L _i Grover 0 0.2 0.4 I I miles 12-04-03 NFRWQPA 2003 WATER QUALITY PLAN UPDATE Major Point Source Inventory Data Operating Agency: NPDES Permit#: CO-582009 Hill—n - Park Sanitation District Permit Expires: 7/31/04 Description of Treatment Facilities: Aerated lagoon. Polishing pond, and chlorination. Discharge Location: Unnamed ditch tributary to Ashcroft Draw in NW% Section 36, T5N, R66W, thence So. Platte River. Stream Segment Classification: Recreation Class 1, Aquatic Life Class 2 Warm, Agriculture. Service Area Population: Existing 2005 2010 2015 2020 2,993 3,173 3,332 3,499 3,674 Capacities: Design Existing Year at 80% Year at 95% Capacity Load Design Design Flow (mqd) 0.336 0.31 2002 2003 Organic (lbs./day BOD5) 753 647 2002 2004 Effluent limits required beyond secondary to meet stream standards: None Estimated 5-year construction needs: Complete rerating of capacity to 0.5 and improvement of facilities, through the addition of more aerators, removal of sludge, enlarging of chlorination capacity, redirection of facilities, and other controls are underway. The outfall line needs replacement. II-86 ) ) ) 1 ii1 � i i , { { i 111 I i Ili , , , wild lily f•i ` I 1 [ I • I !. f,.. _ --= -rte .L - • . } - -- ---) t. TSN , HILL-N-PARK S. D. = - Hili-N-Park 5. D. -i Hi , lreeley 7 !_�� .)(illE 1 Milliken -- o 0.5 1.0 miles „-0,e, NFRWQPA 2003 WATER QUALITY PLAN UPDATE Major Point Source Inventory Data Operating Agency: NPDES Permit#: CO-0029581 Town of Hudson Permit Expires: 04/30/04 Description of Treatment Facilities: 2 aerated lagoons, a polishing pond and chlorination before discharge to the Beebe Seep Canal. Added influent flow meter in 1998 and ozone aeration in the third cell in 1994. Discharge Location: Beebe Seep Canal in the SW'A, NE %, T1N, R65W. Stream Segment Classification: Unclassified irrigation ditch. Service Area Population: Existing 2005 2010 2015 2020 1,620 1,815 2,760 4,200 6,000 Capacities: Design Existing Year at 80% Year at 95% Capacity Load Design Design Flow (mqd) 0.197 0.138 2005 2007 Organic (lbs./day BOD5) 395 326 2003 2005 Effluent limits required beyond secondary to meet stream standards: None Estimated 5-year construction needs: IA corrections where appropriate and cost effective. Adjustments in plant operation and detention time are being made to improve treatment efficiency. Hudson is in the process of completing a 201 Facility Plan to determine their best long-range course of action. In the interim, the Town plans to modify and deepen the existing lagoons and add a bar screen and grit chamber. An option being explored is to connect to the new treatment plant at Lochbuie. 11 -88 j i £0t0 ZI 93Iiw Ii 50 5T0 uospnH, I + i-- j. NOS4(1H 1 - Y , aT L- ------t_tjl 6 I ii - — - , ,I - � ON m =P cn I I £ £ , i I , �, NZl I / � i it I / I Ikff I tt NFRWQPA 2003 WATER QUALITY PLAN UPDATE Major Point Source Inventory Data Operating Agency: NPDES Permit#: CO-0021156 Town of Johnstown Permit Expired: 07/31/02 Description of Treatment Facilities: A three cell aerated lagoon system. The first lagoon (5.3 acres) is aerated followed by two polishing ponds in series (4.8 acres), and chlorination. Effluent is discharged through a pipe to the Little Thompson River one-half mile to the east Discharge Location: North of State Highway 60 approximately one mile east of Johnstown in the S Section 3, T4N, R67W, Little Thompson River, Segment 9. Stream Segment Classification: Recreation Class 2: 10/16-4/30, Class lb 5/1, Class 2 Warm Water Aquatic Life, and Agriculture. Service Area Population: Existing 2005 2010 2015 2020 Central Facility 3,900 5,900 7,500 14,000 15,000 Low Point Facility 0 2,500 3,750 5,000 7,500 Cross Point Facility 0 1,500 5,000 9,000 12,000 Capacities: Design Capacity Existing Year at Year at Central Facility Existing Proposed Load 80% Design 95%Design Flow(mqd) .42 0.75 0.38 2001 2003 Organic (Ibs./day GODS 854 1,600 772 2001 2003 Low Point Facility Flow(midi 0.5 Cross Point Facility Flow(mqd) 0.10 Effluent limits required beyond secondary to meet stream standards: PELs received May 2001 indicate extremely restrictive ammonia standards. Johnstown plans an improvement project to the CWWTF with an expansion of capacity to 0.75 mgd in 2002-2003 with ammonia removal now and a water resource solution based on effluent reuse within 5 years. Expansion will include adding aeration capacity to ponds 1 and 2, deepening of pond 2, adding a fixed film media basin between ponds 2 and 3, and adding DAF unit after pond 3, to be followed by chlorination and dechlorination. An increase in capacity to 1.5 mgd is planned for the next phase of improvements. Estimated 5-year construction needs: The existing(central facility) treatment plant will be expanded by 2003 and again when needed in the future. Johnstown also has plans to build two new treatment plants to the northwest and southeast of town center, called Low Point and Cross Point plants, respectively. The Low Point plant will have about 0.5 mgd of capacity using activated sludge treatment with a discharge to the Big Thompson River. A site application for the Low Point was approved in May 2001, and it may be built in 2004. The Cross Point site is being proposed as an activated sludge plant that would be constructed in 2005, with discharge to the Little Thompson River. Effluent from both plants will be used for landscape irrigation to the extent possible. r II -90 E0-w-zi SaI!W � r Aajaa,�s irLETI T puoiano1 k. -7., umo4suLor ;.._..w NMOSNHO2 . . .... F., ......„ I c.„ ".1. (1:1 • it • •• I I I I • --�/ I 2V ; - �� .•r.. c- �, _ t2 /. I f %/,%/ //. • f i /;, �i, I " __. - -• - / i 1 7b� � I / ✓' � // / /i i , �� 91 r j- _7 lows me a-miimiewilir 1 I ,1' 1 1 I I I I I - IIII TTI' T A £ £ [W2 _ J -. 1 i ea illi T , c 'c I ' '�' III • ill / h M k 645, ��. L. GI a 3 I I _. k�\ '.. ixt°,tea► NFRWQPA 2003 WATER QUALITY PLAN UPDATE Major Point Source Inventory Data Operating Agency: NPDES Permit#: CO-0041254 Town of Keenesburg Permit Expired: 04/30/03 Description of Treatment Facilities: Aerated lagoon, polishing pond, chlorination in the NW% of SE %of SE 3' of Section 26, T2N, R64 W. Discharge Location: Sloans reservoir— farmer's private pond— used to irrigate fields, slight discharge to intermittent draw. Stream Segment Classification: None. Service Area Population: Existing 2005 2010 2015 2020 959 1,100 1,200 1,500 1,800 Capacities: Design Existing Year at 80% Year at 95% Capacity Load Design Design Flow (mqd) 0.1 0.081 2003 2005 Organic (lbs./day BOD5) 231 100 2015 >2020 Effluent limits required beyond secondary to meet stream standards: None Estimated 5-year construction needs: Additional Aeration will be needed in the foreseeable future. Lagoon expansion is planned by 2004. The State has informed Keenesburg that they may have to meet more strict limits in their renewed permit, which would cause the Town expenses of from $400,000 to $1M in lagoon upgrades. II -92 -- -- , , r , /. I Yc � i I. — __ , I -sr KEENESBURG KO r T2N N 1 1 Keenesburg 0 0.2 0.4 miles 12-04-03 NFRWQPA 2003 WATER QUALITY PLAN UPDATE Major Point Source Inventory Data Operating Agency: NPDES Permit#: CO-0021954 Town of Kersey Permit Expired: 10/31/95 - extended Description of Treatment Facilities: Oxidation ditch, activated sludge plant with discharge from the secondary clarifier to an evaporative-percolation pond for disposal. Discharge Location: Groundwater in SE 34 of Section 15, T5N, R64 W. Stream Segment Classification: No discharge to surface stream. A--- Service Area Population: Existing 2005 2010 2015 2020 1,410 1,610 1,866 2,164 2,508 Capacities: Design Existing Year at 80% Year at 95% Capacity Load Design Design Flow(mgd) 0.18 0.092 >2010 Organic (lbs/day BOD5) 500 212 >2010 Effluent limits required beyond secondary to meet stream standards: None Estimated 5-year construction needs: Based on information provided in the Town's 2002 Wastewater System Facility Plan, the Town is moving forward with purchasing some land adjacent to the existing facility in order to construct a new activated sludge facility and a new surface water discharge pipe to the South Platte River. The new WWTF will be staged for an ultimate capacity of 0.29 mgd. The initial stage will be 0.14 mgd. II -94 1 i ' r 1 I+ J I f I H-H1--HMI_;-+-I I H-1-{-1-M -H-I-H-H-HtH III H+-I-H+I++W 1 1 1 1 1 I+II I' 44, KERSEY r_-_i Kersey CY 0 0.2 0.4 T5N ! miles 12-04-03 NFRWQPA 2003 WATER QUALITY PLAN UPDATE Maio!. Point Source Inventory Data Operating Agency: NPDES Permit#: CO-0584058 Town of La Salle Permit Expires: 12/31/04 Description of Treatment Facilities: Aerated lagoon with rock filter and chlorination and dechlorination then discharging into South Platte River. An expansion lagoon is located directly to the east of the main lagoon for future expansion if ever needed. Discharge Location: Into the South Platte Rive, Segment 2 (Region 2) in the SE 4 of SE Yr of Section 29, T5N, R65W. Stream Segment Classification: Class 2 recreation, Class 2 Warm Aquatic Life. Service Area Population: Existing 2005 2010 2015 2020 2,050 2,300 2,700 3,200 3,700 Capacities: Design Existing Year at 80% Year at 95% Capacity Load Design Design Flow (mqd) 0.46 0.25 >2005 >2010 Organic (lbs./day BOD5) 1,841 484 >2005 >2010 Effluent limits required beyond secondary to meet stream standards: N/A Estimated 5-year construction needs: Sludge removal from aerated lagoon, division of aeration basin, and upgrade of aerators. 11-96 r � / . i _ J L _ - - - - rl / , T5\ �\ � .. , T4N I ,[ ... ___..-- - te i /� / I 1 I '. I I LA SALLE r _i LaSalle 0 0.2 0.4 miles 12-04-03 NFRWQPA 2003 WATER QUALITY PLAN UPDATE Major Point Source Inventory Data Operating Agency: NPDES Permit#: CO-581000-1 Town of Lochbuie Permit Expires: 04/03/04 Description of Treatment Facilities: Aerated lagoons, polishing pond, diffused air, surface aeration, chlorination. A new extended aeration activated sludge plant with UV disinfection is under construction and will be put into service in 2004. Discharge Location: Existing lagoons - Beebe Seep Canal in the SE '/4 of NW 4 of Section 31, T1 N, R65W. New mechanical plant- Beebe Seep Canal in the NW Y of NW% of Section 29, T1 N, R65W. Stream Segment Classification: Unclassified irrigation ditch. Service Area Population: Existing 2005 2010 2015 3,700 12,600 25,600 38,100 Capacities: Design Existing Year at 80% Year at 95% Capacity Load Design Design Existing Lagoons Flow(mid) 0.36 0.30 2002 2004 Organic (Ibs./day BOD5) 750 492 2004 2005 New Mechanical Plant Flow (mgd) 1.5 2006 2007 Organic (lbs./day BODS) 2,500 2007 2008 Effluent limits required beyond secondary to meet stream standards: None Estimated 5-year construction needs: Construction of the second phase (3.5 mgd) of the new mechanical WWTP that will have hydraulic loading capacity of 10.0 mgd at service area build- out. The design on phase 2, bringing the total capacity to 5.0 mgd, is now complete. If-98 )iti1ty F' 1 1 1 - r t n / I .� /• .1 I 1 i� - 1 I i LOCHBUIE I 3ii,_. ./ -- I W County Weld Coun T1N 11 j--_ Lochbuie Adams County o 0.375 0.75 i miles 12-04-03 NFRWQPA 2003 WATER QUALITY PLAN UPDATE Major Point Source Inventory Data Operating Agency: NPDES Permit #: CO-026671 City of Longmont Permit Expires: 01/31/08 Description of Treatment Facilities: Activated sludge, clarification, nitrification, UV disinfection, and anaerobic sludge digestion. Discharge Location: Saint Vrain Creek in the NW% Sec 11, T2N, R69W. Stream Segment Classification: Class 1 Warm Water Aquatic Life, Class 1 Recreation Service Area Population: Existing 2005 2010 2015 2020 78,000 80,000 84,000 87,000 94,000 Capacities: Design Existing Year at 80% Year at 95% Capacity Load Design Design Flow (mqd/Avg Peak Mo) 17.0 8.9 >2010 Organic (lbs./day BOD5 31,000 18,000 >2010 Effluent limits required beyond secondary to meet stream standards: Ammonia limits in new permit to meet TMDL allocation. Estimated 5-year construction needs: None unless nutrient removal is required. II - 100 • j i i . Ari•,... I \- •, i ,`a , 2n Pi • ' lir ___\.._: i r j T3N _-� ' T2N 3 3 m co ___.—J ( i a � 7. { 1— ___ _ I 1 ' o � LONGMONT _.! Longmont v — j 3 - :=15tVrainS. D. ��_ 0 0.5 1.0 i _._... - _�._..__•-- ;.... miles NFRWQPA 2003 WATER QUALITY PLAN UPDATE Major Point Source Inventory Data Operating Agency: NPDES Permit#: CO-0026701 City of Loveland Permit Expires: 07/31/07 Description of Treatment Facilities: Activated sludge, trickling filter, clarification, chlorination, dechlorination, and anaerobic sludge digestion. Discharge Location: Section 19, T5N, R68W—Big Thompson River Segment 4C. Stream Segment Classification: Recreation Class 2: 10/16- 4/30, Class lb 5/1 — 10/15, Class 2 Warm Water Aquatic Life, and Agriculture. Service Area Population: Existing 2005 2010 2015 2020 56,600 62,000 67,700 73,200 78,700 Capacities: Design Existing Year at 80% Year at 95% Capacity Load(*) Design Design Flow (mqd) 8.0 5.7 2004 2005 Organic (lbs./day BOD5 12,500 13,580 1997 2000 *peak monthly average Effluent limits required beyond secondary to meet stream standards: None Estimated 5-year construction needs: Construction of Ultraviolet disinfection facilities by June 30, 2004. Construction of step feed aeration basin and expansion to 10 mgd and 15,600 lb/day BOD capacity and by October 1, 2004. The construction cost for current expansion project and proposed facilities is approximately$12 million. The City of Loveland's recent permit renewal has resulted in more stringent effluent limitations as well as compliance dates for the UV and Step Feed facility operation. The City incorporated anticipated future projects into the current project to comply with the new permit requirements. The accelerated construction of the projects required to meet the new permit has caused the City to adjust the five and ten year wastewater Capital Improvement budget and prioritize projects. II - 102 \\\ NI‘ s \ - LOVELANb - iI I Loveland - 5. Fort Collins 5. D. �. � Ber-p Windsor II ll - �� .�� Johnstown o i.o 2.0 ' I II I se miles 3 I_. / r..,' 12-00-03 SF 1 V m m _ _ Le re ::4 , i i I ; � 1 a I / b 3 x 1 _ ,: 1 U5 34 �- I I _ / 1,... — 1 { / C , -- LO 002 / A 1 I 5E it • TSN (-A,, 11 // i f5� bf, /% TSN NN � `� TON 1 F m m n 6' 0, N,.0 _ O Y --7--r try 9 - - r NFRWQPA 2003 WATER QUALITY PLAN UPDATE Major Point Source Inventory Data Operating Agency NPDES Permit#: Town of Mead CO - 582036 Lake Thomas CO -582017 Permits Expire: 07/31/04 Description of Treatment Facilities: Aerated lagoon and polishing pond. Discharge Location: 1 mile east of Mead in the SW%of Section 10, T3N, R68W to an unnamed tributary of Lake Thomas and St. Vrain Creek. Stream Segment Classification: Class 2 Warm Water Aquatic Life, Class 1 Recreation, Agriculture. Service Area Population: Existing 2005 2010 2015 2,056 2,600 9,290 13,330 Capacities: Design Existing Year at 80% Year at 95% Old Plant Capacity Load Design Design Flow(mqd) 0.18 0.075 2002 2013 Organic (lbs./day BODS) 333 169 2002 2003 Lake Thomas Flow (mqd) .012 .001 Effluent limits required beyond secondary to meet stream standards: None Estimated 5-year construction needs: A master wastewater utility plan feasibility study is currently being prepared, looking at options of building a mechanical plant or conveyance of wastewater to the Saint Vrain Sanitation District for treatment. 11-104 ) ) ) / .ru / �__ —� . l1� //t " —41 31 \ \. Boulder Cou T3N f/ �V 3 3 FO m j 1 / my I j. ) ,h 6 5 4 J 3 1.4�� • I ti / 9 -4 lo 9 Il 72\ I 8 46 el I 1_-.-_ \ _-_ 4 __f I 3a11/24Y . if: /-11_ I � �6 Illr� I 9 9 I MEAD ,� \ 1 Mead ru �\\ a;, \I L} a I. � _ ,c, L/2 Berthoud im �� N� ,--- �, [U [! Johnstown r E �9 Milliken %( / is L. _! St. Vrain S. D. N\ r I jr 0 1.0 2.0 • / ' miles NFRWQPA 2003 WATER QUALITY PLAN UPDATE Major Point Source Inventory Data Operating Agency: NPDES Permit#: CO-0026808 Town of Milliken Permit Expires: 01/31/07 Description of Treatment Facilities: Currently, 2 aerated lagoons, finishing pond, chlorination, dechlorination. Proposed, extended aeration (Aeromod Process, 4 cell layout), activated sludge. Discharge Location: Segment 5 of the Big Thompson River in the SE %of SE '4 of Section 1, T4N, R67W. Stream Segment Classification: Class 2 Warm Water Aquatic Life, Class la Recreation, Agriculture. Service Area Population: Existing 2005 2010 2015 2020 3,900 5,200 8,400 10,800 12,800 Wastewater Flows (mqd) Existing 2005 2010 2015 2020 0.18 0.20 0.40 0.58 0.72 Organic (lbs./day BODSZ Existing 2005 2010 2015 2020 279 310 620 900 1120 Year at Year at Current 80% Proposed 80% Hydraulic Capacities (mqd) 0.35 2007 0.70 2015 Organic(lbs./day BODS) 570 2007 1600 >2020 Biosolids Treatment and Disposal: Proposed (after 1/1/05) Belt Filter Press, either land applied or landfill(yet to be determined). Estimated 5-year construction needs: Possible additional Aeromod cells, as growth requires. 11 -106 60-10z( u t sa• /Calaa.as i11 'i i Ci ®= 0'Z 0.1 0 UMO.�SU�Of i_1 +5-3,4 ")11 a G%- N3JIIIIIW S T ua i i Hi>1OdN- Il ,ya_ �I. IIW r fig`_' _ _. SE �i •V � E E - Ifr -I i/ „ --- I:: t I. L' I 9r a \ SI / S., 4 yx, �'.. dl cC / . - �� I \ _T - - -- r / -V I - r I } h -�-� 'N- ," r ---NPJTA WSJ. 1.._ CF y_ I se. vc` � S� 1. i \ -' T t --r� III r'-r - -- - -n- :. � _. > a I I` 1 r I I i I I i I _ I I I I I _ TIII ICI -- I NFRWQPA 2003 WATER QUALITY PLAN UPDATE Maior Point Source Inventory Data Operating Agency: NPDES Permit#: CO-0036757 City of Northglenn Permit Expired: 01/27/07 Description of Treatment Facilities: Aerated lagoons in series with effluent holding reservoir. Discharge Location: Bull Canal. Big Dry Creek or Thompson Ditch. Stream Segment Classification: Big Dry Creek— Class 2 Warm Water Aquatic Life, Recreation Class 2, Agriculture. No classification on others. Service Area Population: Existing 2005 2010 2015 2020 33,350 38,749 41,100 41,100 41,100 Capacities: Design Existing Year at 80% Year at 95% Capacity Load Design Design Flow (mgdi 6.5 4.01 >2005 >2010 Organic (Ibs./day BOD5I 11,384 *6,365 >2005 >2010 `includes Thornton enclaves Currently served Effluent limits required beyond secondary to meet stream standards: Ammonia limits. Estimated 5-year construction needs: Nitrification facilities to meet stream standards. A treatment alternatives analysis is being done to determine the best course of action. II - 108 ) ) ) ri 1 / / / 7 _ ,-, Ni -__ 1_ t 1. • t �, .\\ �IP } If , F , NORTHGLENN _-- I Northglenn s i 4 : -c. I -ItV 5t Vrain 5. b. 4 I i j Weld County 0 0.5 1.0 Adams County miles 120403 NFRWQPA 2003 WATER QUALITY PLAN UPDATE Major Point Source Inventory Data Operating Agency: NPDES Permit#: CO-0041211 Town of Pierce Permit Expires: 12/31/03 Description of Treatment Facilities: Triangular shaped stabilization pond. This pond is divided into cells by a submerged dike; the north cell has one floating 5HP aerator, the south cell is unaerated; chlorination capability. Discharge Location: To ground water in the SW Y of NW% of Section 36, T8N, R66W. Stream Segment Classification: N/A Service Area Population: Existing 2005 2010 2015 2020 950 1,250 1,275 1,300 1,350 Capacities: Design Existing Year at 80% Year at 95% Capacity Load Design Design Flow (mgd)(Equalized) 0.18 0.089 >2015 Organic (lbs./day BOD5 361 179 >2015 Effluent limits required beyond secondary to meet stream standards: N/A Estimated 5-year construction needs: A chlorine contact pond will be built between the Chlorine contact point and sedimentation ponds by 2005. A new influent flow meter was installed in 2003. 11 - 110 r 1 1 i 1 � I I 1 - - - .rI I 1 L _ i 1 3 PIERCE i +ry r:jPierce 0 0.2 0.4 T 8 N I I l ' miles 12-04-03 NFRWQPA 2003 WATER QUALITY PLAN UPDATE Major Point Source Inventory Data Operating Agency: NPDES Permit#: CO-0040355 Town of Platteville Permit Expires: 7/31/06 Description of Treatment Facilities: Aerated lagoons & chlorination discharged to S. Platte via 4,700 foot outfall line, constructed wetland. Discharge Location: South Platte River, north side of Weld County Road in the SE Xs, NE 4, Section 13, T3N, R67W. Stream Segment Classification: Class 2 Recreation, Class 2 Warm Water Aquatic Life, Agriculture. Service Area Population: Existing 2005 2010 2015 2020 2,581 2,751 3,425 3,952 4,559 Capacities: Design Existing Year at 80% Year at 95% Capacity Load Design Design Flow (mqd) 0.34 0.18 2014 2018 Organic(lbs./day B0D5Z 494 453 2001 2004 Effluent limits required beyond secondary to meet stream standards: Ammonia at 25 mg/I from July to September. Estimated 5-year construction needs: As an interim measure, upgrade organic load capacity to 871 lbs./day and additional disinfection capability. The plant will need expansion or a new plant will be needed in the next three to five years. A Facility plan is being prepared for the ultimate solution and should be completed by the end of 2003. 11-112 T3N / 3 3 I r` 1.19 Q rY it I [[1 it I ---- l \ Di k. f 1 , N./.." \ /i I ,i \: I F i f , I PLATTEVILLE '' . I Platteville Al- % f 0• 0.3 06 miles NFRWQPA 2003 WATER QUALITY PLAN UPDATE Major Point Source Inventory Data Operating Agency: NPDES Permit#: COG-581009 Town of Severance Permit Expires: 04/30/04 Description of Treatment Facilities: Aerated ponds followed by a stabilization pond followed by chlorination. Discharge Location: Law Ditch Stream Segment Classification: Unclassified r Service Area Population: Existing 2005 2010 2015 2020 850 1,585 2,810 4,035 5,260 Capacities: Design Existing Year at 80% Year at 95% Capacity Load Design Design Flow (MGD) .094 0.044 2004 2005 Organic (lbs/day BOD5) 168 110 2003 2004 Effluent limits required beyond secondary to meet stream standards: None. Estimated 5-year construction needs: The Town of Severance is currently applying for site approval to expand the plant to 0.155 MGD hydraulic capacity and 388 lbs/day organic capacity. These improvements will include covering the first two lagoons and providing additional aerators and mixers. The Town has also recently signed an agreement with the Town of Windsor to treat wastewater from Severance in the future. 11 - 114 r li • /' I I ` i / ilow / / i I• , ' T7N 3 TEN L--- 3 j i ./.7- )k:i SEVERANCE I___! Severance / , i/_,1 Windsor // / / , 0.375 0.75 , / // / /// // miles 12-04-03 NFRWQPA 2003 WATER QUALITY PLAN UPDATE Major Point Source Inventory Data Operating Agency: NPDES Permit#: CO-0020737 South Fort Collins Sanitation District Permit Expires: 12/31/05 Description of Treatment Facilities: Activated sludge, clarification, filtration, UV disinfection, and aerobic digestion. Discharge Location: Fossil Creek Reservoir in the SE IA of Section 17, T6N, R68W. • Stream Segment Classification: Class 2 Warm Water Aquatic Life, Class 1 Recreation, Agriculture. Fossil Creek Reservoir is unclassified. .-� Service Area Population: Existing 2005 2010 2015 2020 17,200 20,295 27,665 35,035 42,405 Capacities: Design Existing Year at 80% Year at 95% Capacity Load Design Design Flow (mgd) 3.0 1.525 2005 2006 Organic (lbs./day BOD5) 6,255 3,073 2005 2006 Effluent limits required beyond secondary to meet stream standards: None at present. It is anticipated that ammonia and phosphorus limits will eventually be placed on Fossil Creek Reservoir. District planning has allowed for this eventuality. Estimated 5-year construction needs: Design for an expansion will need to be started in 2003-4 to meet expected capacity. The 2000 Master Plan calls for a Phase 1 - 3.0 mgd expansion to a total capacity of 6.0 mgd by the year 2006. 11 - 116 lik 1 III v ,--1 ' J it • Illh I 6N ii ..� Ali I3 Sn CO i . is r .- . ki • • I • �.� �� \ • I. �{„.., 1 I1 r\ ,� t Iiii ��3 ' !• r SOUTH FORT COLLINS S. D. ' i \, �\ I \� \\ \\� H-/I �i Collins S. D. t = 1 , L. I -- i • ,. Fort Coffins ii TGN { V > r L } \ I\N l �� Loveland h V. .�.... ..,�. .1°.."4.1.'. 1 Windsor r l _ 0 Z 2.0 12-04-03 NFRWQPA 2003 WATER QUALITY PLAN UPDATE Major Point Source Inventory Data Operating Agency: NPDES Permit#: CO-0041700 St. Vrain Sanitation District Permit Expired: 01/31/03— extended Description of Treatment Facilities: Four sealed oxidation ponds, with one converted to biosolids handling. The other three are no longer used for processing but are available for storage if needed. The plant has been converted to a mechanical system. It includes headworks trash removal, two 1.5 mgd extended aeration lagoon and clarifier modules, Ultra- violet disinfection, and solids storage and handling facility. A third 1.5 mgd extended aeration and lagoon module is permitted Discharge Location: To Oxbow Lake then to St. Vrain Creek; NW Y$ SE 1/., of Section 31, T3N, R67W of the C P.M. Stream Segment Classification: Class 1 Warm Water Aquatic Life, Class 2 Recreation Service Area Population: Existing 2005 2010 2015 2020 Est. 8,000 13,250 19,950 26,650 3Z000 Capacities: Design Existing Year at 80% Year at 95% Capacity Load Design Design Flow(mgd/Avg Peak Mo) 3.0 0.8 2013 2017 Organic(lbs./day BOD5 2,190 1,200 2009 2011 Effluent limits required beyond secondary to meet stream standards: Total Ammonia (as N) varies monthly. Limits to be set upon issuance of new permit that is currently pending with the State and dependent upon the TMDL study. Estimated 5-year construction needs: Interceptor on north side of St. Vrain Creek and west of I- 25. Interceptor running parallel to WCR 24 and east of WCR 13. Two (2) interceptor lines south of Hwy 52 and east of 1-25. Interceptor to run parallel to current Godding Hollow line. Interceptor to parallel WCR 13 south of the plant to service Firestone, Frederick and Dacono areas not served by the District. Interceptor to parallel WCR 13 north of the plant to service areas north of Hwy 66. II- 118 r t1 _ J r•. -.i.. i , 2741 . I� 1 3 i 4 4i ( T3N T2N ] LkFN . . D 1 * i e. c A F— i 5 ,{ i 105, —_— �... t' '1 — wf � a J K 1 . q 1 ;a r I �) !�. 17 J tF is In i 1 I / ---- ..,,_ --i _ficsirti 'k - 1- � , l it j p P .F I rp LA A • • r - I °*°° \ 4 - i , 1 I : i I 1 t I ti • TT St. Vrain S. b. Longmont ST, VRAIN S. D. (i// F iiti"GO rt a IiF� .ici Mee, ' ,[[i1TJL bacono Northglenn4" Erie � ,, 0 1.0 2.0 F ' miles Q 12-04-03 NFRWQPA 2003 WATER QUALITY PLAN UPDATE Major Point Source Inventory Data Operating Agency: NPDES Permit#: CO-0031844 Upper Thompson Sanitation District Permit Expires: 07/31/2007 Description of Treatment Facilities: Activated sludge, secondary clarification, nitrification, chlorination, dechlorination, and sludge digestion. Discharge Location: Big Thompson River, Segment 2, NE % Section 29, T5N, R72W. Stream Segment Classification: Class 1 Cold Water Aquatic Life, Class 2 recreation. Service Area Population: 2003 2005 2010 2015 2020 14,463 18,750 20,500 25,000 30,000 Peak Flow Projection: 1.6 1.8 2.3 2.6 3M mgd Peak BOD Loading 2,670 3,323 3,980 4,500 5,365 (lbs/day BODE Capacities: Design Existing Year at 80% Year at 95% Capacity Load Design Design Flow (mqd)(Equalized) 2.0 1.2 2010 2015 Organic(lbs./day BOOS 4,450 1,912 2010 2015 Effluent limits required beyond secondary to meet stream standards: The permit issued on 6/27/2002 contained ammonia and metals limitations. Estimated 5-year construction needs: Increase plant capacity as needed for growth. A site application to increase to plant capacity to 3.0 mgd has been approved. A centrifuge was installed January 6, 2003. Additional A Basins will be constructed as needed within the next 5 years. Biosolids Disposal: The District is now dewatering sludge to 15% or greater solids content. It has contracted with Liquid Waste Management to land apply the biosolids. (160 dry tons per .-r year). II -120 va — T 7 I ._.. N N m N 4 i I • 7 • I '3 I 9 10 I i 1 1 I • • • • • • • I 21 En • i I f / Y ( AI • • v7 a� / V -. gin l,• / cot , war Ihilier I • Illtc5i / ri n / 1 .�_••_••_•fr_• \ Y - _ • I 1 = Le .•\ / Ir ----- ---- - ,.�.-- 16 1 \ \ %I i • F o - / , I I I _ _---- + I ii UPPER THOMPSON S• D. -®- 1•.._..I Upper Thompson S. D. - If �j• L �f / 5� c - nc I �' �, ,,n: 0 1.0 2.0 13$ I miles 12-04-03 I NFRWQPA 2003 WATER QUALITY PLAN UPDATE Major Point Source Inventory Data Operating Agency: NPDES Permit#: CO-0021580 Weld County Tri-Area Sanitation District Permit Expires: 1/31/06 Description of Treatment Facilities: Aerated ponds, chlorination. Discharge Location: SW% of the NW% of Section 19, T2N, R67W, north of Firestone, Colorado. Stream Segment Classification: To St. Vrain Creek via an unnamed tributary. Service Area Population: Existing 2005 2010 2015 8,700 8,738 10,430 12,473 Capacities: Design Existing Year at 80% Year at 95% Capacity Load Design Design Flow (mqd) 1.5 0.64 2009 2012 Organic (lbs./day BOD5) 1,659 993 2004 2005 Effluent limits required beyond secondary to meet stream standards: None. Estimated 5-year construction needs: Make improvements to the collection system by installation of an interceptor sewer to accommodate proposed developments in the eastern portion of the District and the southern portion of the Dacono Sanitation District. 11 - 122 '� r _; • 24 VD %416 in N j / i i • ' r 25 i1 30 \'.\ 29 \, • : I \ I 1 \ I 1 'sue 3 \/32 % I / / / // / // ' / �� // WELD COUNTY •/ / �! WI-AREA S.D. ---I Weld County •--= Tri-Area S.D. / ' Daconc 5- D. - f /% / / I St Vrain S. D. / I ��/ / 9 0.375 0.75 /// miles �I 12-04-03 NFRWQPA 2003 WATER QUALITY PLAN UPDATE Major Point Source Inventory Data Operating Agency: NPDES Permit#: CO-0046451 Town of Wellington Permit Expires: 09/30/08 Description of Treatment Facilities: Extended aeration oxidation ditch activated sludge treatment with clarification and UV disinfection. Discharge Location: Boxelder Creek in the SE 'A of NW% of Section 10, T9N, R68 W. Stream Segment Classification: Class 2 Warm Water Aquatic Life, Class 2 Recreation, and Agriculture. Service Area Population: Existing 2005 2010 2015 2,400 4,000 9,000 14,000 Capacities: Design Existing Year at 80% Year at 95% Capacity Load Design Design Flow (mqd) 0.45 0.24 2006 2007 Organic (lbs./day BOD5) 1,314 456 2006 2007 Effluent limits required beyond secondary to meet stream standards: Ammonia limits are specified in the new permit, with 1-2 mg/effluent NH3 being the most restrictive monthly average limit. Estimated 5-year construction needs: Construct an addition to the new mechanical WWTP to satisfy new growth demand and comply with anticipated effluent requirements which will include Nitrification. I/I correction is needed and is ongoing. II - 124 , 11 A i a � G TTTIT1TT" 1 I MP - 1 �i'` _ - Ir 7. lic I 1116 4 tit: 1K: , a di I • 33 1 m co jS # I V a' a' -- -_-- .� _ 1 i T it I i �a hIII I -44, jf 441 , I. _ .._ . r- ,4s. - - _ '/, , I � , �Y c4 , , J At II >, ,✓,r , I ai, ,,,,Nit II I , , _ WELLINGTON a I -�� 11 �� 1 ' �� I i Wellington I ' ITT. Q T � ElI a Fort Collins I I �� is fps : 0 1.0 2.0 r%itt Ill' 1H . -, .1t_11 I.� — —1 , , k,k miles 1z-04-03 NFRWQPA 2003 WATER QUALITY PLAN UPDATE Major Point Source Inventory Data Operating Agency: NPDES Permit#: CO-0020320 Town of Windsor Permit Expires: 01/31/06 - Description of Treatment Facilities: Activated sludge, nitrification, U.V. disinfection.. Discharge Location: Cache la Poudre River, Segment#12 in the SE 3, Section 34, T6N, R67W. Stream Segment Classification: Class 2- Warm Water Aquatic Life, Class la Recreation, and Agriculture. Service Area Population: Existing 2005 2010 2015 2020 10,500 12,000 14,970 18,230 22,468 Capacities: Design Existing Year at 80% Year at 95% Capacity Load Design Design Flow (mqd) 2.8 1.04 >2010 Organic (Ibs./day BOD5) 7,006 2,200 >2010 Effluent limits required beyond secondary to meet stream standards: Ammonia and metals limits. II - 126 I r , - { ` 3/3 /, ! .4,..../. Via. .I I I 31 \ '�' pl 1 �� L �- / I T 7 .T6N 1 ill N } 1i I • Y . i .1 I r 11 ' i iiI - „ � �_ 1 ....�..�..� 1 -J — I_ . F_ �� I . i • 1' I • I L �� - =d 1 T II c = /el O I�(, • / O • / I _1� 5 , 1 I i I T6N � J II � P TSN li! 3 3 ii I m n I i W I WINDSOR �__! Windsor I Severance =®:_ 5 N L VIII Greeley o 1.0 2.0 • miles 12-04-03 NFRWQPA 2003 WATER QUALITY PLAN UPDATE Major Point Source Inventory Data Operating Agency: NPDES Permit#: CO-0041882 B & B Mobile & R.V. Park Permit Expired: 7/31/06 Description of Treatment Facilities: 15,000 GPD air-o-gest extended aeration plant. Discharge Location: Retention and evaporation pond, discharge to Segment 10 Boulder Creek. Stream Segment Classification: Aquatic Life Class 1, Recreation Class Z Water Supply, Agriculture Service Area Population: Existing 2005 2010 110 150 150 Capacities: Year Year Design Existing at 80% at 95% Capacity Load Design Design Flow (mgd) .015 .004 2005 2005 Organic(lbs./day B0D5) 31.5 12 Effluent limits required beyond secondary to meet stream standards: None. Estimated 5-year construction needs: In order to meet more stringent ammonia limits for discharge to Boulder Creek, the discharger installed a sludge holding tank which will allow for better control of solids in the system. No other needs are anticipated. Sludge will be disposed of by a liquid waste disposal company. II -129 NFRWQPA 2003 WATER QUALITY PLAN UPDATE Major Point Source Inventory Data Operating Agency: NPDES Permit#: COG-582009 Berthoud Estates Permit Expires: 07/31/04 Description of Treatment Facilities: One aerated lagoon, one polishing pond, one intermittent sand filter pond, and a chlorination chamber. Discharge Location: Tributary to Dry Creek and Little Thompson River, Segment 10, in the NW 14 of Section 30, T4N, R69W. Stream Segment Classification: Class 2 Warm Water Aquatic Life, Class 1 Recreation, Agriculture. Service Area Population: Existing 2005 2010 480 480 480 Capacities: Design Existing Year Year at Capacity Load at 80% 95% Design Design Flow(mqd) 0.052 0.042 2001 N/A Organic (lbs./day BOD5) 193 71 Effluent limits required beyond secondary to meet stream standards: None. Estimated 5-year construction needs: Replacement of effluent structure and chlorination tanks. 11- 130 NFRWQPA 2003 WATER QUALITY PLAN UPDATE Major Point Source Inventory Data Operating Agency: NPDES Permit#: COG-0581006 Johnson's Corner, Inc. Permit Expires: 4/30/04 Description of Treatment Facilities: Two aeration ponds, chlorinator, continuous discharge flow meter. Discharge Location: Retention and evaporation pond, eventually to unnamed gully, tributary to Hillsboro Ditch. Stream Segment Classification: Service Area Population: N/A Capacities: Design Existing Year at 80% Year at Capacity Load Design 95% Design Flow (mqd) 0.04 0.022 Organic (lbs./day BODO 99 56 Effluent limits required beyond secondary to meet stream standards: Estimated 5-year construction needs: None. Plan to expand the truck-stop facility which may increase usage. The Town of Johnstown may annex this area and provide wastewater treatment through their proposal Low Point plant, eliminating the need for this plant. r II -131 NFRWQPA 2003 WATER QUALITY PLAN UPDATE Major Point Source Inventory Data Operating Agency: NPDES Permit#: CO-0029742 Riverglenn Homeowners Association Permit Expired: 01/31/03 Description of Treatment Facilities: 2 aerated lagoons, polishing pond, chlorination. Discharge Location: Segment 9 Little Thompson River in the SE % of Section 27, T4N, R69W Stream Segment Classification: Class 2 Warm Water Aquatic Life, Class 1 Recreation, Agriculture. Service Area Population: Existing 2005 2010 2015 172 230 290 290 Capacities: Design Existing Year at 80% Year at 95% Capacity Load Design Design Flow(mqd) 0.029 .012 >2010 Organic (Ibs./day BOD5) 52 17 >2010 Effluent limits required beyond secondary to meet stream standards: None. Estimated 5-year construction needs: A new chlorine contact basin and miscellaneous maintenance and update items. II - 132 NFRWQPA 2003 WATER QUALITY PLAN UPDATE Major Point Source Inventory Data Operating Agency: NPDES Permit#: CO-0581005 Weld County School District RE-3J Permit Expires: 04/30/04 Description of Treatment Facilities: A package plant consisting of 2 aeration basins, 2 clarifiers, and chlorine contact. Sludge removed hauled to Denver Metro. Discharge Location: Lowline Canal Ditch. Stream Segment Classification: Unclassified. Service Area Population: Existing 2005 20010 1,250 1,500 1,500 r-� Capacities: Design Existing Year at 80% Year at 95% Capacity Load Design Design Flow (mgd) 0.015 0.005 Organic (lbs./day BOD5) 77 35 Effluent limits required beyond secondary to meet stream standards: None. Estimated 5-year construction needs: None. II - 133 CHAPTER III INDUSTRIAL PERMITTED POINT SOURCE DISCHARGES er A Y ` C��pa. aim w • --� r .. .' a, 4 1i Y Y 40`x$ ' *, a _ Yl4` �Y _ ., ...� -. .i.. ..� •. .L A . Sr :� . .b _r { .;,4 r . , ,ird. R a Y I _ r A. PERMITTED POINT SOURCE DISCHARGES ANHEUSER-BUSCH The Anheuser-Busch Incorporated (ABI) brewery in Fort Collins produces wastewater which is disposed of in one of two ways. It is either pumped to Nutri- Turf, a subsidiary of Anheuser-Busch Companies (ABC), for irrigation or pumped to the City of Fort Collins Drake Water Reclamation Facility for treatment under a pretreatment contract. All of the effluent goes to Nutri-Turf during the summer, while in the winter about one-half of the effluent is treated by the City and the remainder goes to Nutri-Turf. The Nutri-Turf land application site is Sec. 19, SE '/4 Sec. 20, Sections 21, 22, and 29, and the NW, NE, and SE 1/4 of Sec. 30 and NW, NE, and SW'/4 of Sec. 32, T8N, R67W. It has a design application capacity of 3.51 mgd and uses 35 center pivot irrigation systems to grow an alfalfa-bromegrass mixture. Before application, wastewater is stored in agitated storage tanks. Stormwater runoff collection ponds with pumpback capability collect irrigation runoff and prevent discharge from the property under normal conditions. Each basin also has an emergency spillway for discharge under severe storm conditions. The facility permit, number is CO- 0039977 expires on May 30, 2007. The receiving water is Black Hollow Creek. To date there has been no discharge since operations began. COLORADO DIVISION OF WILDLIFE The Division of Wildlife operates 3 fish hatcheries under permit in the region. They are the Bellevue, Watson, and Poudre Hatcheries. III - 1 The Bellevue Hatchery operates under permit No. COG-130010, which expires on December 31, 2003. The hatchery has two 300,000 gallon sediment ponds which remove sediment before discharge of flow-through water to Panther Creek, a tributary of the Cache la Poudre River. In June of 1998 these ponds were lined with a poly liner and will only have clean surface overflows going through them. They will be alternated every two months, with the full pond being drained and flushed out of all sediments while the other pond begins collecting clean flows for two months. All raceway and trough cleaning sediments will bypass these two ponds and be sent directly to the two acre-foot ponds at the Watson unit. All Bellvue pond flushing sediments will also go to the Watson ponds every two months. This project cost about $300,000 and was done to control whirling disease parasites, not to upgrade discharge requirements. The hatchery is located in Section 36, T8N, R70W, and discharges about an average of 1.44 mgd from May to October and 0.864 from November to April. The Watson Hatchery is located in Section 30, T8N, R69W, and discharges an average of about a 19.0 mgd to the Poudre River. Treatment is through two settling ponds of about 2 acre-foot capacity each. The operation is regulated by permit number COG-130009, which expires on December 31, 2003. Permit number COG-130008 regulates the Poudre Hatchery, which is located in Section 32, T9N, R74W. The permit expires on December 31, 2003. Treatment is through two 2 acre-foot settling ponds, and the discharge averages about 14.0 mgd. EASTMAN KODAK - COLORADO DIVISION The Kodak Colorado Division is an industrial complex that manufactures photographic products. Kodak operations that generate industrial wastewater include film support production, support facilities, film and paper sensitizing, silver III -2 recovery from sensitizing, utilities, and demineralization of intake water. Kodak Colorado has several individual pretreatment units that are used on processes prior to the main treatment plant. Those include acid regeneration, silver recovery, and air stripping. In addition to the Kodak operations, Kodak Polychrome Graphics manufactures lithoplates and generates wastewater that is discharged to the Kodak Colorado division's wastewater treatment facility. The main treatment plant consists of two parallel aerated lagoons, two polishing lagoons, and three multi-media rapid sand filters. The first two lagoons add oxygen and provide mixing to ensure adequate BOD removal; and the second lagoons are used primarily for solids settling. When necessary, aerators are used to maintain minimum dissolved oxygen levels for odor control. The filters, with polymer added to improve efficiency, are used to remove particulates. The discharge of effluent from the sand filters is to Segment 12 of the Cache la Poudre River in the SW '/. of Section 35, T6N, R67. The discharge is regulated by CDPS permit No. CO-0032158, which is scheduled to expire on July 31, 2005. Permit limits are included for ammonia, metals, flow, and oil and grease, BOD5, TSS, and pH. The maximum flow limitation of 1.8 mgd for a 30-day average. Kodak also is required to perform whole effluent toxicity testing on their effluent. SWIFT BEEF - LONE TREE The Swift Beef Company operates a wastewater treatment plant located in the SE '/< of Sec. 31, T6N, R64W. This plant treats wastes from Swift Beefs beef and lamb packing plants in Greeley. It consists of four anaerobic lagoons followed by an '"1 III -3 activated sludge treatment system, polishing ponds, and chlorine disinfection before discharge to Lone Tree Creek just upstream from its confluence with the South Platte River. The permit number for this discharge is CO-0027707, and it expires on March 31, 2005. The capacity of the plant is 3.2 mgd, and its flows are currently at 2.8 mgd. This permit has more stringent ammonia and nitrate limitations; it has resulted in large capital and operating costs expenditures by the company. Residual chlorine limits have been lowered significantly, and bio-monitoring is required. Over $4 million in capital costs have been spent for improvements. These improvements include a pretreatment plant that pretreats wastewater at the packing plant to remove BOD5, suspended solids, and fats, oil, and grease to produce a saleable byproduct and reduce the load on the treatment plant dramatically. Waste activated sludge and primary sludge are currently being hauled from the plant by Liquid Waste Management Company at the rate of about 5 mgd. Additional improvements possibly anticipated include increased capacity in primary and secondary units, nitrification and denitrification, and more sludge dewatering and storage capacity. WESTERN SUGAR COMPANY The Western Sugar Company processes sugar beets in Greeley. The factory operates on a continuous basis for about five months after harvest, or until all beets are processed. The operating period is usually October through February. The factory discharges non-contact barometric cooling water during this operating period only. The current permit for Western Sugar is No. CO-0041360, expires July 1, 2005. The permit has ammonia and fecal coliform limits that take effect on September 1, 2004. The permit regulates the discharge of the cooling water through two III -4 connected condenser water holding ponds, the second of which discharges to Segment 12 of the Cache la Poudre River. Treatment provided is aeration in the first pond and the periodic addition of Clorox and bromine to the pan condensers to control bacteria. The point of discharge is in the NE Y of the NW Y of Section 9, T5N, R65W. The average volume of discharge is 1.5 mgd with a maximum capacity of 6.0 mgd., but is limited by discharge permit to 3.0 mgd. Limits in the permit are included for flow, TSS, BOD5, TRC, fecal coliform, temperature, acute whole effluent toxicity and monthly limits for total ammonia from September to March. No discharge is allowed April through August. COLORADO SWEET GOLD (formerly GTC Nutrition, Coors BioTech, Zeagen, and Golden Technologies Companyl Colorado Sweet Gold, operates a manufacturing plant in Johnstown in which they use a wet corn milling process to produce corn starch and animal nutrients. Wastewater is treated and discharged to the Little Thompson River in Section 9, T4N, R67W. The CDPS permit number for this discharge is CO 0001058, which expires on October 31, 2005. Treatment facilities include a surge or mixing basin, an aerated basin using submerged turbine aerators, an aerated lagoon with static aerators, a settling pond, and a polishing pond. Sludge from these facilities is hauled by commercial contract and discharged to farm land. GTC Nutrition Company has a State of Colorado permit for the sludge disposal. The capacity of the wastewater treatment facilities is 0.430 mgd and 1,750 pounds of BOD5/day. Average effluent flows are 0.2 mgd. Major wastewater constituents removed are complex carbohydrates and ammonia. Current permit limits are 1,750 #/day BOD5 on a 30-day average. TSS limits are III -5 2,100 lbs. on a 30-day average basis. The only discharge from the facility is to the Little Thompson River via discharge point 003. III-6 B. DATA SHEETS NFRWQPA 2003 WATER QUALITY PLAN UPDATE Major Point Source Inventory Data Operating Agency: NPDES Permit#: CO-0039977 Anheuser-Busch Permit Expires: 05/30/07 Description of Treatment Facilities: Wastewater is land applied by 35 center pivot systems and used as irrigation water. Before application, wastewater is stored in agitated storage tanks. Storm water runoff collection ponds with pumpback capability collect irrigation runoff and prevent its discharge from the property. Each pond also has an emergency spillway where runoff could be discharged. Discharge Location: The location of the irrigated land is T8N, R67W, Section 19, SE 3 of Section 20, Section 21, Section 2Z Section 29, NW, NE, and SE 3 of Section 30 and NW, NE and SW 3 of Section 32, tributary to Black Hollow Creek. Stream Segment Classification: Class 2 Warm Water Aquatic Life, Class 2 Recreation, and Agriculture. Capacities: Design Existing Capacity Load Flow (MGD) 3.51 2.4 Effluent limits required beyond secondary to meet stream standards: None. Estimated 5-year construction needs: Potential addition of 250 acres of pivots in Section 27 and/or addition of 20 to 30 rapid infiltration basins. III -7 NFRWQPA 2003 WATER QUALITY PLAN UPDATE Major Point Source Inventory Data Operating Agency: NPDES Permit#: COG-130010 BELLVUE Colorado Division of Wildlife Permit Expires: 12/31/03 Description of Treatment Facilities: The facility is a state trout hatchery and rearing unit, with two sediment ponds at 300,000 gallons each. * Discharge Location: Township 8N, Range TOW, Section 36. Panther Creek, which flows into segment 10 of the Poudre River. Stream Segment Classification: Class 2 Cold Water Aquatic Life, Class 2 Recreation, Water Supply, and Agriculture. Capacities: Design Existing Capacity Load Flow (MGD) 3.0 1.44 avg(MayOct) 0.864 avg (Nov-Apr) Effluent limits required beyond secondary to meet stream standards: None. Estimated 5-year construction needs: *In June of 1998 these ponds were lined with a polyliner and will only have clean surface overflows going through them. They will be alternated every two months, with the full pond being drained and flushed out of all sediments while the other pond begins collecting clean flows for two months. All raceway and trough cleaning sediments will bypass these two ponds and be sent directly to the two acre-foot ponds at the Watson Unit. All Bellvue pond flushing sediments will also go to the Watson ponds every two months. This project cost about S300,000 and was done to control whirling disease parasites, not to upgrade discharge requirements. No new construction planned. No operational changes planned. III -8 NFRWQPA 2003 WATER QUALITY PLAN UPDATE Major Point Source Inventory Data Operating Agency: NPDES Permit#: COG-130009 WATSON Colorado Division of Wildlife Permit Expires: 12/31/03 Description of Treatment Facilities: The facility is a state fish hatchery and rearing unit. Effluent Water is "treated"with two sediment ponds. Each settling pond is approximately 2 acre feet. Biosolids are removed every 8-10 years and stored onsite. Discharge Location: Township 8N, Range 69W, Section 30. Poudre River, Segment 10. Stream Segment Classification: Class 2 Cold Water Aquatic Life, Class 2 Recreation, Water Supply, Agriculture. Capacities: Design Existing Capacity Load Flow(MGD) 23.0 19.0 max Effluent limits required beyond secondary to meet stream standards: None. Estimated 5-year construction needs: No changes except Bellvue Hatchery cleaning effluent has been delivered to Watson's settling ponds for treatment since August 1, 1998. Flows are intermittent each week with estimated total additional flow increases intermittently of 200 - 500 gpm for 15 - 30 minute periods 3- 6-per day Monday- Friday each week. Watson is now back into production as of June 2000 at the 150,000 fish (60,000 ib) annual level. No new operational changes or new construction are planned at this time. III -9 NFRWQPA 2003 WATER QUALITY PLAN UPDATE Major Point Source Inventory Data Operating Agency: NPDES Permit#: COG-130008 POUDRE Colorado Division of Wildlife Permit Expires: 12/31/03 Description of Treatment Facilities: The facility is a state fish rearing unit. Treatment consists of nine sediment ponds with a total volume of approximately 26 acre-feet. Biosolids are removed every year and stored onsite. Discharge Location: Township 9N, Range 74W, Section 32. The Cache La Poudre River, Segment 3. Stream Segment Classification: Class 1 Cold Water Aquatic Life, Class 1 Recreation, Water Supply, Agriculture. Capacities: Design Existing r-- Capacity Load Flow (MGD) 14.0 12.5 Effluent limits required beyond secondary to meet stream standards: None. Estimated 5-year construction needs: None. III- 10 NFRWQPA 2003 WATER QUALITY PLAN UPDATE Major Point Source Inventory Data Operating Agency: NPDES Permit#: CO-0032158 Eastman Kodak Company Permit Expires: 7/31/05 Description of Treatment Facilities: Two parallel aerated lagoons, two polishing lagoons, and three multi-media rapid sand filters. Discharge Location: Segment 12 of the Cache la Poudre River in the SW 3 of Section 35, T6N, R67 Stream Segment Classification: Class 2 Warm Water Aquatic Life, Class 2 Recreation, and Agriculture. Capacities: Design Existing Capacity Load Flow (MGD) 1.8 1.1 Organic (Ibs./day BOD5) 200 Effluent limits required beyond secondary to meet stream standards: Ammonia removal, metals limits, and bio-monitoring. Estimated 5-year construction needs: Reinstatement of the chronic silver standard has caused Kodak to spend$30,000 to investigate utilizing the translator method to develop a site specific standard. 111- 11 NFRWQPA 2003 WATER QUALITY PLAN UPDATE Major Point Source Inventory Data Operating Agency: NPDES Permit#: CO-0027707 Swift Beef Lone Tree Permit Expires: 03/31/05 Description of Treatment Facilities: Anaerobic lagoons, activated sludge system, polishing ponds, and disinfection with chlorine gas. Discharge Location: South Platte River via Lone Tree Creek, SE 3 of Section 31, T6N, R64 W. Stream Segment Classification: Class 2 Warm Water Aquatic Life, Class 2 Recreation, and Agriculture. Capacities: Design Existing Capacity Load Flow (MGD) 3.2 2.6 Effluent limits required beyond secondary to meet stream standards: Ammonia removal Estimated 5-year construction needs: None .-� III- 12 NFRWQPA 2003 WATER QUALITY PLAN UPDATE Major Point Source Inventory Data Operating Agency: NPDES Permit#: CO-0041360 Western Sugar Company Permit Expired: 06/31/05 Description of Treatment Facilities: Non-contact barometric cooling water, used during the concentration and crystallization stages of beet sugar processing, is piped to two connected condenser water holding ponds. Aeration was added to the first pond in 1998. The second pond discharges to the Cache la Poudre River via a Parshall flume. There is no other specific treatment except periodic addition of Clorox and bromine to the pan condensers to control fecal coliform. Discharge Location: Cache la Poudre River via a Parshall flume. NE 3 of the NW 3, Section 9, Township 5N, Range 65W Stream Segment Classification: Class 2 Warn Water Aquatic Life, Class 2 Recreation, and Agriculture. Capacities: Design Existing Capacity Load Flow (MGD) 6.0 max. 5.20 max. 3.0 avg. 1.48 avg. Effluent limits required beyond secondary to meet stream standards: None. Estimated 5-year construction needs: Depends on requirements of new permit to be issued. III - 13 NFRWOPA 2003 WATER QUALITY PLAN UPDATE Major Point Source Inventory Data Operating Agency: NPDES Permit#: CO 0001058 Colorado Sweet Gold Permit Expires: 10/31/05 Description of Treatment Facilities: dissolved air flotation, clarification, filtration, and land application. Discharge Location: Section 9, T4N, R67W to Segment 9 of the Little Thompson River. Stream Segment Classification: Class 2 Warm Water Aquatic Life, Class 2 recreation 10/16- 4/30 Class lb Recreation, 5/1 - 10/15 and Agriculture. Capacities: Design Existing Capacity Load Flow (MGD) 0.430 0.2 Organic (lbs./day BOD5) 1,750 7-day avg. Effluent limits required beyond secondary to meet stream standards: None. Estimated 5-year construction needs: None. III- 14 Hello